Desktop Browsers(default settings) |
brave 1.97 |
chrome 155.0 |
duckduckgo 1.211 |
edge 155.0 |
firefox 158.0 |
librewolf 155.0 |
mullvad 15.0 |
opera 137.0 |
safari 26.6 |
tor 15.0 |
ungoogled 152.0 |
vivaldi 8.2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
State Partitioning testsWhich browsers isolate websites to prevent them from sharing data to track you?
A common vulnerability of web browsers is that they allow tracking companies to 'tag' your browser with some data ('state') that identifies you. When third-party trackers are embedded in websites, they can see this identifying data as you browse to different websites. Fortunately, it is possible for this category of leaks to be fixed by partitioning all data stored in the browser such that no data can be shared between websites.
|
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|
Alt-Svc
Alt-Svc allows the server to indicate to the web browser that a resource should be loaded on a different server. Because this is a persistent setting, it could be used to track users across websites if it is not correctly partitioned. |
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
result, different first party: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
result, different first party: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
result, different first party: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3
result, different first party: h2, h2, h2, h2
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same first party: h3, h3, h3, h3, h3
result, different first party: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
blob
A 'blob URL' is a local reference to some raw data. Trackers can use a blob URL to share data between websites. |
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party:
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party:
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${baseURI}blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async (secret) => {
const response = await fetch(`${baseURI}blob?mode=read&key=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
BroadcastChannel
A BroadcastChannel is designed to send messages between tabs. In some browsers it can be used for cross-site communication and tracking. |
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (secret) => {
try {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data === 'request') {
bc.postMessage(secret);
}
};
} catch (e) {
throw new Error('Unsupported');
}
}
read: () =>
new Promise((resolve, reject) => {
const bc = new BroadcastChannel('secrets');
bc.onmessage = (event) => {
if (event.data !== 'request') {
resolve(event.data);
}
};
bc.postMessage('request');
setTimeout(() => reject(new Error('no BroadcastChannel message')), 3000);
})
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
CacheStorage
The Cache API is a content storage mechanism originally introduced to support ServiceWorkers. If the same Cache object is accessible to multiple websites, it can be abused to track users. |
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party:
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party:
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
cookie (HTTP)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926_http,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_http,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_http,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_http,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_http
result, different first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_http,
1d653492-bad6-4f49-9e00-76af7e05ab68_http,
a761212b-7906-442d-ab3d-e0dd5b37201b_http,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_http,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_http
result, different first party:
857ab621-1ba4-42b6-af58-67c12c826ffa_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347_http,
a701abbd-6353-4d12-8510-f66a8280519d_http,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_http,
d073840c-956c-4dca-86b3-3ba0adedaf5c_http,
16cc67a7-5638-48f1-8173-90e301a4c356_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55_http,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_http,
1bae60da-6527-4c42-880c-620299628418_http,
f2646935-99a5-4364-ae37-a74e0ca093c7_http,
c879dd15-54f8-45d8-8085-b803a661d5b9_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_http,
0d686629-f5a4-4a47-9681-e3bbab11cca2_http,
359286ad-46ee-464a-a905-78164dce13f4_http,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_http,
51b4fba0-5041-4255-a726-4c169ec19ca7_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_http,
66355194-6850-41aa-84f1-8978a8d95e61_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_http
result, different first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_http,
66355194-6850-41aa-84f1-8978a8d95e61_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_http,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_http,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_http,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_http,
ee63836e-bf83-4000-9818-cbfd840f9c15_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6_http,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_http,
a581206a-d228-4993-adad-bec906483c87_http,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_http,
3db91538-26cf-48aa-b012-bdc01d802ad3_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_http,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_http,
6b829494-be03-4ed0-9085-0f19cf3a971a_http,
620c4643-8b73-436e-8c99-b944bbba4d42_http
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_http,
4fc367cf-2522-460c-9140-49e227554670_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_http
result, different first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_http,
4fc367cf-2522-460c-9140-49e227554670_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
cookie (JS)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926_js,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_js,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_js,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_js,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_js
result, different first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_js,
1d653492-bad6-4f49-9e00-76af7e05ab68_js,
a761212b-7906-442d-ab3d-e0dd5b37201b_js,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_js,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_js
result, different first party:
857ab621-1ba4-42b6-af58-67c12c826ffa_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347_js,
a701abbd-6353-4d12-8510-f66a8280519d_js,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_js,
d073840c-956c-4dca-86b3-3ba0adedaf5c_js,
16cc67a7-5638-48f1-8173-90e301a4c356_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55_js,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_js,
1bae60da-6527-4c42-880c-620299628418_js,
f2646935-99a5-4364-ae37-a74e0ca093c7_js,
c879dd15-54f8-45d8-8085-b803a661d5b9_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_js,
0d686629-f5a4-4a47-9681-e3bbab11cca2_js,
359286ad-46ee-464a-a905-78164dce13f4_js,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_js,
51b4fba0-5041-4255-a726-4c169ec19ca7_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_js,
66355194-6850-41aa-84f1-8978a8d95e61_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_js
result, different first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_js,
66355194-6850-41aa-84f1-8978a8d95e61_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_js,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_js,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_js,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_js,
ee63836e-bf83-4000-9818-cbfd840f9c15_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6_js,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_js,
a581206a-d228-4993-adad-bec906483c87_js,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_js,
3db91538-26cf-48aa-b012-bdc01d802ad3_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_js,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_js,
6b829494-be03-4ed0-9085-0f19cf3a971a_js,
620c4643-8b73-436e-8c99-b944bbba4d42_js
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_js,
4fc367cf-2522-460c-9140-49e227554670_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_js
result, different first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_js,
4fc367cf-2522-460c-9140-49e227554670_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CookieStore
The Cookie Store API is an alternative asynchronous API for managing cookies, supported by some browsers. |
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CSS cache
CSS stylesheets are cached, and if that cache is shared between websites, it can be used to track users across sites. |
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_7697368451697286,
fake_026345020402776642,
fake_20924798585713278,
fake_08471756343733428,
fake_018034278246038093
result, different first party:
fake_21931868354606143,
fake_9283786968527448,
fake_4105240645520003,
fake_19978352918203823,
fake_7197738371848534
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_06287399824096784,
fake_18440556571636413,
fake_806972856065165,
fake_34576934243557944,
fake_13420952577668022
result, different first party:
fake_06287399824096784,
fake_18440556571636413,
fake_806972856065165,
fake_18273754244091034,
fake_13420952577668022
unsupported: false, false, false, false, false
passed: false, false, false, true, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_26716129147184997,
fake_38052093619561744,
fake_7890643113507179,
fake_7900583079043706,
fake_015211247194335753
result, different first party:
fake_8656285173322595,
fake_30720630280206884,
fake_8256491652418354,
fake_5361744615376967,
fake_07739671562954231
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_18484986022534966,
fake_14414209126725797,
fake_9332034821831163,
fake_014973615708629096,
fake_8818985288491583
result, different first party:
fake_18484986022534966,
fake_14414209126725797,
fake_9332034821831163,
fake_014973615708629096,
fake_8818985288491583
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_43759410670261234,
fake_4809683112881351,
fake_11236882171640938,
fake_17679120006984128,
fake_3943057752058985
result, different first party:
fake_6944749364202909,
fake_5121486285313961,
fake_2278254435771896,
fake_03465601243366434,
fake_9087782817111856
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_8261132710293899,
fake_39207137121831814,
fake_7824994943451111,
fake_6213382451499518,
fake_9953120529965138
result, different first party:
fake_6114568697676792,
fake_9469208756526233,
fake_12913066048186495,
fake_383170488572101,
fake_11089602000527288
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_9209047087407294,
fake_831731129793021,
fake_021205421695461357,
fake_030071195504351333,
fake_9601708521154559
result, different first party:
fake_5453005715194934,
fake_5149710772577696,
fake_7013980449205832,
fake_0746759793361833,
fake_8759535269070224
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_8978895892186463,
fake_9261761126972738,
fake_7671750228533132,
fake_6172221187988909,
fake_4079251001618647
result, different first party:
fake_8978895892186463,
fake_9261761126972738,
fake_7671750228533132,
fake_6172221187988909,
fake_4079251001618647
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_23281097869991418,
fake_3823103266065033,
fake_7243860000371294,
fake_5789152827322239,
fake_4231977231415447
result, different first party:
fake_4527430139439128,
fake_16508908272844636,
fake_07691300192617634,
fake_6861353597382382,
fake_6125752746133357
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_8913392567673124,
fake_6768811847034542,
fake_8473292756004005,
fake_312071476763196,
fake_6040719099964644
result, different first party:
fake_07185218632819357,
fake_10322832585445352,
fake_9317582325730933,
fake_4551049655292294,
fake_7971874774078203
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_3943871566624426,
fake_6417480055615103,
fake_5081021132664008,
fake_5642377240030256
result, different first party:
fake_3943871566624426,
fake_6417480055615103,
fake_5081021132664008,
fake_5642377240030256
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same first party:
fake_6478624952111238,
fake_7364896851435123,
fake_46889586524386107,
fake_5610146004623779,
fake_9841453819718755
result, different first party:
fake_6478624952111238,
fake_7364896851435123,
fake_46889586524386107,
fake_5610146004623779,
fake_9841453819718755
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
favicon cache
A favicon is an icon that represents a website, typically shown in browser tab and bookmarks menu. If the favicon cache is not partitioned, it can be used to track users across websites. |
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 1, 1, 1, 1
result, different first party: 2, 2, 2, 2
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same first party: 2, 2, 2, 2, 2
result, different first party: 3, 3, 3, 3, 3
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
fetch cache
When a resource is received via the Fetch API, it is frequently cached. That cache can potentially be abused for cross-site tracking. |
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 2, 2, 2, 2
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
font cache
Web fonts are sometimes stored in their own cache, which is vulnerable to being abused for cross-site tracking. |
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 2, 1
unsupported: false, false, false, false, false
passed: false, false, false, true, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
getDirectory
navigator.storage.getDirectory exposes a location for storing files to web content. In some cases, these files may be shared across tabs. |
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt', { create: true });
const stream = await fileHandle.createWritable();
await stream.write(secret);
await stream.close();
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
try {
const root = await navigator.storage.getDirectory();
const fileHandle = await root.getFileHandle('secret.txt');
const file = await fileHandle.getFile();
return file.text();
} catch (e) {
throw new Error('Unsupported');
}
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
H1 connection
HTTP/1.x are the classic web connection protocols. If these connections are re-used across websites, they can be used to track users. |
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
H2 connection
HTTP/2 is a web connection protocol introduced in 2015. Some browsers re-use HTTP/2 connections across websites and can thus be used to track users. |
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
H3 connection
HTTP/3 is a new standard HTTP connection protocol, still in draft but widely supported by browsers. If it is not partitioned, it can be used to track users across websites. |
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
d9cb92169d5e8e3aad40296a4502cecd,
6251cc868ee58a35fc3dee780a378cd9,
446a73e3407411f04564858cc9bc9ddb,
4b6c9368136440499a5540602f8036bd,
feaf796a0382b1f385759f909eabca28
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
4d6ffcc63973409cd3c5c8626045ebb1,
29e207a63bd0310adf7a6d9b6b6b0ddf,
a18294962f57a3df3e8c82fe77ad7473,
c9b25afe4d469e56b4a085dde8fd7764,
0a5f170ea834ed1124bc4309af6245a9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party: , , , ,
result, different first party: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
3309f13f0ebd2d5625488735d16f4d5f,
e85b1cacf13672d12b4c5a868fa1bf0e,
a37216ef0fe2461e6aa5fd431aa21f6c,
d422ffcf3eb42c5f7b9a1d16e057442d,
d745ba43e02af8185f6b4ff1df684004
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
c5b84199e909e6c8786c5dbfe254570d,
ad939861bf4cb0aba5bda3e69ccb6dea,
c6267f34a2f8e91aa43783dca286c373,
c0b8edaf2a000f5e0f0d520dba7415f6,
806cd309b8137ed64dd0513ead1cbc76
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
46a2407606329ee63c2ed2400a0088f7,
9540c06a0893dbbb335789044e3a9f60,
5cd6b4f5c2c05d6533b803bf0b0d6aec,
9c4440b5e584bdd1b9eedd5ad71d1771,
f65960ff5eef611371e5415d5f1a2c2c
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
f95794a5057840c69e161b7b7d6720eb,
5f8de5395ac2e47380685d13f3b7f066,
c0ecba1af3b3ed87f8b88b4bebfab0bc,
295b5935613f08d6d77f83e44b65a762,
5ce2515ea8d1c4a103159535f665ac9b
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
ba434c25fefc6f8b0b2500155f6d3d79,
868f6a82d2d7a4b6613c90ed7e990122,
e300d5c53a5c233efed8b0019d2b0d3a,
74458dbc59d21efa1226ee9e10fbdb89,
47158a5179263ad32886b561bc3c7e89
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party: , , , ,
result, different first party: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party: , , , ,
result, different first party: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
b2a1f1457aac0a9173bbca9b2e937411,
3877c2d51f7726626b2c746851e6f099,
7836dc9896c6d0ba7660a8627f031307,
e7cc56c684128a39d3097ecd9ff657fe
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
// Ensure that we can switch over to h3 via alt-svc:
for (let i = 0; i < 3; ++i) {
await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
await sleepMs(500);
}
// Are we now connecting over h3?
const response = await fetch('https://h3.privacytests2.org:4434/connection_id', { cache: 'no-store' });
const text = await response.text();
// Empty response text indicates we are not connecting over h3:
if (text.trim() === '') {
throw new Error('Unsupported');
}
}
read: async () => {
const response = await fetch('https://h3.privacytests2.org:4434/connection_id');
return await response.text();
}
result, same first party:
72d0b129c08c883d2113bb3927dd17f1,
21996f505ceac754d727f3900d93e0d6,
63bfb7519d02c2574871d2fa9bc909b9,
147426bc61904f236b1d92672d6e50db,
887f78ae6e5dacf49abbee72b07da520
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
HSTS cache
The HTTP Strict-Transport-Security response header allows a website to signal that it should only be accessed via HTTPS. The browser remembers this directive in a database, but if this database is not partitioned, then it can be used to track users across websites." |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Used http, Used http, Used http, Used http, Used http unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Used http, Used http, Used http, Used http, Used http unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false passed: false, false, false, false test failed: false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
|
HSTS cache (fetch)
The HTTP Strict-Transport-Security response header allows a website to signal that it should only be accessed via HTTPS. The browser remembers this directive in a database, but if this database is not partitioned, then it can be used to track users across websites." |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Used http, Used http, Used http, Used http, Used http unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Used http, Used http, Used http, Used http, Used http unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
write: null read: null result, same first party: , , , , result, different first party: HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected, HTTPS used by default; no HSTS cache issue expected unsupported: , , , , passed: true, true, true, true, true test failed: false, false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false passed: false, false, false, false test failed: false, false, false, false |
write: set HSTS flag read: read HSTS flag result, same first party: not tested, not tested, not tested, not tested, not tested result, different first party: Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false |
|
iframe cache
An iframe is an element in a web page than allows websites to embed a second web page. Caching of this web page could be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 2, 2, 2, 2
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
image cache
Caching of images in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 2, 1
unsupported: false, false, false, false, false
passed: false, false, false, true, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
indexedDB
The IndexedDB API exposes a transactional database to web pages. That database can be used to track users across websites, unless it is partitioned. |
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: undefined
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
localStorage
The localStorage API gives websites access to a key-value database that will remain available across visits. If the localStorage API is not partitioned or blocked, it can also be used to track users across websites. |
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
locks
navigator.locks (only supported in some browsers) allows scripts on multiple tabs to coordinate. If this API is not partitioned, it can be used for cross-site tracking. |
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party:
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party:
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party:
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party:
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name'),
Error: undefined is not an object (evaluating 'queryResult.held[0].name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context,
Error: LockManager.query: query() is not allowed in this context
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (key) => {
if (navigator.locks) {
navigator.locks.request(key, lock => new Promise((resolve) => {}));
const queryResult = await navigator.locks.query();
return queryResult.held[0].clientId;
} else {
throw new Error('Unsupported');
}
}
read: async () => {
if (navigator.locks) {
const queryResult = await navigator.locks.query();
return queryResult.held[0].name;
}
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name'),
Error: Cannot read properties of undefined (reading 'name')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
prefetch cache
A <link rel='prefetch'...> suggests to browsers they should fetch a resource ahead of time and cache it. But if browsers don't partition this cache, it can be used to track users across websites. |
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 2, 1
unsupported: false, false, false, false, false
passed: false, false, false, true, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different first party:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1
result, different first party: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
script cache
Caching of scripts in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 2, 1
unsupported: false, false, false, false, false
passed: false, false, false, true, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
SharedWorker
The SharedWorker API allows scripts from multiple tabs to share a background thread of computation. If SharedWorker is not partitioned, then it can be abused to shared data between websites in your browser. |
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party:
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party:
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.,
Error: SharedWorker constructor: StorageAccess denied.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: none, none, none, none
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (secret) => {
try {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
// console.log("worker", worker);
const messagePromise = new Promise((resolve) => {
worker.port.onmessage = (e) => resolve(e.data);
});
worker.port.postMessage(secret);
await messagePromise;
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const worker = new window.SharedWorker('supercookies_sharedworker.js');
worker.port.start();
const messagePromise = new Promise((resolve, reject) => {
worker.port.onmessage = (e) => resolve(e.data);
setTimeout(() => reject(new Error('no SharedWorker message received')), 200);
});
worker.port.postMessage('request');
const message = await messagePromise;
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same' && message === 'none') {
throw new Error('Unsupported');
}
return message;
}
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: none, none, none, none, none
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
TLS Session ID
The TLS protocol is used by HTTPS to make connections secure. If the browser were to re-use a TLS session, then the session ID could be used to track users across websites. |
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
396957bcb3f724b37954a8664766511c93d3f3e854880f221d70f083eb5e343d,
93e11f00e4ed4caa6dfcce155e038f68e50a254783cea0f97964eabc2ca5dfa0,
ccfc2ef02ec40473e67119e60906585155569cf2d0ec4a8e51d5f36b1943e22a,
e0529920da878c9d0aa17eda6f84ef6c1c9d01284c8ddbf7d1821e9862bd0b79,
1f5763ecd5addf9631846877d1d6f0e353057a7c04326500dbd8227d860a8725
result, different first party:
e8ca92be12671a6b6d87301c7649af20a7379c02072e831dd705102789257b0d,
5c7001c026da38e75378b733327482ec362c7f0d80eb34cb67f3af94fb354fe1,
6f5c031a5f3c91fb134c337e6b7cfacde9656fe50489b11a421ad8aae79a2496,
a25e2b2b164875ed0a4ad18b0d1714579e096f03d0a07e9d1de77848de6ef25d,
2711d608479c3071912ff9bd5e0315af293d25d0668c8c8f4d2df69bb1fd24c2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
a2e5dd88e3f918d14e8a7b9caa9e3561be5ec28dd50a0b800ae0433969cf9c0d,
46b5869e9bf515b226a1f86605d37c0ee59e6e1f7554a5afe7c66132fb13b625,
c3781538cdf39689a8f0503ffd88b9e219e6f77e0ca1d9aac51146417f6adaba,
8164db48b56e288fa16f3fbc762814955b76418835b42efcb0377796620550d4,
ead156f9b6dd122436da317f33b7d239f9fea1a8b16acde2977e23e96366f309
result, different first party:
9b76c40eba28b01e82926410274e84d2597d8d5be498165a6b8a76b983686ca4,
24ccea163c75089c8f8712084a7a8e3e1d85eca4f195504b374e515c06cc8535,
e7cb769c0e49069e49f1bf07aea3dee056a45e67d52114122174437078d08923,
dc42029ff26532d353d06b9218e331ee1f3f2cc7dc0696b8be202825455b445b,
17b10b7d4e90a2dcb02e623a90fba8c5c0f66dc95072e16db4e40d526fae3ba7
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
c26b8e154fa20f6d2d20bb08ec0d95d3a46910e395787d3bfae78fb4d3b231ac,
2243a75ea629331fbd6571eea4166c558ec0a80dd5477048b3d992a194927165,
6e27b3a30917a8b6019511fe1ff71da2480826ba27ef6b96d251331bed89cf94,
a6c0971fda4b2af70df0590273e9ffbe2d3e52e62e82bc93397d38e27d52240a,
3de16cdfb54fcc8333a1ef07e177e611695f2fe5d6ddc5002e9585262a5c9d90
result, different first party:
eb7b9181c09205b3ebec9528fda408d5a5f52e80cb1f9a54fc59fa049bb7d422,
eaeb4e920545dd74c07e3cc1237848eb0cfb47df15270464809098701a172ac8,
47d7055150aad104063d5b3f28b1858a65e0dc213113337f81dba576c7892d0d,
6367b0c51c2172453fff5af27f607fc75f2d4e81d6e2e6f399b94c6c76577c9e,
30b935c7ec9a41999c28366025ea427919880dc215a4fd5419c913900cd60fe2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
63babdff32e6d0365af7c5581773de7a6b6ca374fe92362b3e8ac4783771ee6d,
b319b879b14f2593f94208c81f84b2c4ad8d8161f0ec09cc3a13425e42f7f0c1,
8c8ac3276d25b76c9b047d44616e12f5f8248a47a45a300e656af38767bab96d,
d0fe35e7f2be744645e2209b613a04d60d7e2ff75c4eed56f08468bb2d92b06f,
a30d8def22fb8c8427c84bcee6e0d6f34e9a1c9bc615248170b30dfe2f10f032
result, different first party:
0c2f2eeaa24ef17e2c9690cbc0a9f33fe64a814ed4420dba936a32756d9173bc,
24d75e504fe757d984f76d281b82f8e10769dcd5b690e8dae6766a50d47ea5cc,
ea2398993eba4eb8d979cb45d093194af8a5ff84282e0dabcf45dccc6d70b400,
e988f019900747ee203225ab599751da418ac9e3feca1a6a4fdfad8087ac5a35,
9d0acaa6efdccf067abaf211f368ab42a00372f9617af33e08a166b05a1441fc
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
b21c6ce8ad941887e8fac3bbe49ef2a86e4a4f405cf94cb20b42245f27382f4b,
2b551014eae7756c504ee5a031e62fad064e34fc8d77a7ea2b07878354619617,
ef87b17746c647dd371ef801eda236664d61455349a096e4ee6700633dd04c3c,
e0345e1f619dc904aa104c2ac8f9a4c28c0d1ac3d3b8a1dd1b1c63d352603f66,
149d96186fa7f9724878f1be465e5918f5044611eeacf3d37b07e0eee341b1de
result, different first party:
ee1e7de5398de6e6b5f054070e1fbfe2e8323669a2611a2133f12ab473d61fcb,
67e6937c531b085434d26356220eef1b5a6c52dc3eb9b32e4ded164c93770432,
b13f308b01aba0cdc6f8a0f336536ed57486840b8f43acdf851aeb04ef030325,
55d2aefdb65c872db435ce68376c3a461ee4fd3c3cc2851ba3529f3ea0954a80,
8f2164948745a6d6e30beff7727cfad80fed8880bc0907bf2bd3bb02bace19d3
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
e3dc38626774f59067b068a70ed1dc4a674790133949506f36c76f5d72e766f7,
d7cb4503b5ff13183164976089ad92f1486e5aef6c8052ead33a18cf25a312d8,
93dea2cbe445055eb5730bb36d3c1c9283743b4ccb71d96e46d8c001b4f4b9dd,
6f6564abc6bb16ce9b1b80c186b523b97c768c2e6fb3a8764e074b66a533d048,
2b5e7863c14abcf1c698ac46cc8d722b62424d7448756afd6c2db53aa8befb5e
result, different first party:
0bd772370ad824603f213067e2e26a4ab25b7938d6fa4dc9bbca5043d9b6230f,
ee4bf98297f2de4c140b9dc7266366057ab2ab9d8ab3a0165476c772b2b4b4ba,
7f38c4078a799b969009b54d7863a42d248b2021a0cb21b84eadb9bd149d156f,
355cc6e1c23a683b4e080b8dd14d178a44c01fffdd273a8ee560f678320aaff5,
f70f39b29925472e44c330923d8e5c9675c74636bef0613588c6388a69f86a04
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
0c45a7995df95a6e10789b99ee72376cb2146ed4d430ad7aff58a4026b7fdb72,
90735b6aaf7b33039cb3f057f72047dcb6b0a8aaa4f4b7aa5c9baff4b1f34725,
d8cbe91f94b0f621a6d4282b4dc988938ae859f861f6e9041ec857f12f9ee837,
1ebcb1c136ce5ae783495f5479b5bd0a1f0f9d8a9b325de3163cb0183766f12c,
158423cf28353b4cb54c8f77c5960648bf395baf033958e3c9d5240ff508408d
result, different first party:
624af70663cf42895b9805c2519ca1f04e930465cc4e65b4fb15522f23a2a56f,
c4567101617686f389efcf96de321b5a35687231570e69494395ed02aef4fb84,
782b1238877885dd91a830dee5633192415df14929909008dfd45e2abb2f5f2b,
6605d6df040b33351671de36ba20f571d6a517e66bc26fc3dd3ab474104a3112,
8ae45dfa9d06f6410691ab0e7e8e44a55859481fa295039a0fb733188d9347e9
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
d4bfc93a62f3223d14a36dd555d4cd5401762f7cd8bf07202a1eccb557e77aa1,
12ddc757765d192c331d7298142813be2aa8a4addd89fe5258b42b5917a9bd0f,
35bd19549cbc6df364abfba9035392620588a6fc571bbcca4da123b3fedfd2d8,
bc371d477e8973ddadc530e1b08ee3591fac7cf2ded9eed7edbc0de714cf6994,
fc300be0383742851c8f240a737aca51997e532e0ca599ad3cc449cde55f19e3
result, different first party:
6279278b548724623817e65c50e10dbf2c690e4cdcd5fc1384afe57ddbe86f3c,
4d759aa04901495dce48a5d5eeaeca45098fe89a37b3864ed2087befe43bf8c7,
eadc70fe919f0c3a2160df555f6bf79b08fcbaf78f8fe1d83ddf824f16562829,
ef39a8e4e25f1f3fa54103b8e32e8dee6c83f50eb66e8d92d3e165085d0701f7,
5ef3e5a55edd2fede7f5d60ab0a512f1a1c8e7fd46192efa710bc6cf7fc10204
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
18aa8fdaa800aea0c1d81233e278fa23fe059ae12065d99e6f042daa62d939fb,
73ee36c5f8cd8b8ccffb990960d7deaf088f810ee934f2e6b2a7f0acff87ebdb,
493cdd2626140eef2da26f15d5443fd01b9dd048d09d922c5e806060be752d0d,
6240c699364776ab0d27ce988c1625bf30b60043069f846c85218b5bd164b4eb,
0d7406cbc356b96602ddbff9361402cac0e703967412c61dd11f4335ec654c1b
result, different first party:
0b8e1914540e9482ac52d457a8d7447b13b261253e36f76e0335dc324699cbe5,
df0a6c4482239e8ef1732a5b9d9eef747c6b028208c05a6a816b6c53704da857,
9fc60289b05b4c93c912dccc5bbc2549e0e504a546196c292f0ccd43177c3366,
86ae4ff8e56a3211d8037de63994d8f15378f4db1eef3b3727331bbb25327039,
20e08649c616443b4d2e020f84290151acb5bc57586b3cbbc4d2603bb56b5b16
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
1d2c7367408707c81c280b47893670a700687dc0faaed640bd05337767b67770,
948e901e1c406eb8951a1bac8b043ed852a60789449de2e2f938dbfbcfb49ae4,
13205e07c4b1ff07e9e21f706adeaddd9997d0e4047d9571345cee90f4505264,
37cc46e631357abe080747c2ca2d29a8498d491ee32aa5d700e46b0138284ef6,
356897a7e475cb06aa0147001cca10f5c459a7e810060f5d88e758cb89b148e1
result, different first party:
40381f7ff6f8386a750cd9a2ce70bff1acc90ab9cb008b27d31153f81cb18434,
656086a22e434c9bc8a59db49175c10b59721805d1fbce1679dc836350dae326,
1b357d92a826af5c4b698542d42379b4f8cf7b7c66ff4ee98918776440e8d73e,
a13b3f7c82158d6f3e4f10677055177907ffd4cc83809899783a4568fc06600a,
000e97aa15e3f3f67abd729b69eb02e826110ae4b225d2980088348677447ed5
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
3d17e646228df26a7658c606d74b254d747371d34630cf9f88df69095649bbff,
b353adadccca5bff591be66e04655430570b6c69289c76959f0ad5a028813790,
9ac26a17626c25166fcfab83b80748fc0dca80bb6129ef99cc0923652298ddac,
4edbfbebe852b43a43e16448abdc9d75cff6bf814433674f2decea7e4de345de
result, different first party:
300679a9e38e32489983a5ab83ed15798a61f2ff5e395cc325c8ebda7f52e320,
475ab7c17fb7a75eaef786157b587b7df8eb5cd647de0aaee43637f5e3ffe845,
33906d904ea1ce2c60121aa41364c21c26b7ee59d8f307597bf0617bf3e648a8,
27ace194413571cc5ea3c5f456c3be09ae6795deea01d481065bc94975ff43e4
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
read: async () => {
const results = await fetch('https://tls.privacytests2.org:8900/');
return (await results.json()).sessionId;
}
result, same first party:
24922b61849d803769ace8cc3422f8a91f6bc56fe82fe3ccbb6a85f7b3f9a110,
7f8db5900032a33925ff1fa1e6c880eb8ef236060c1266801dfbab1d5d8ad170,
bf7381616c205374417a9ea82641582cda56ee1bad29aaab271c9e01ba61e70b,
caa533c7f2dd3f0a9bb56cdff4ac8e9ba5e5e54936da0e54b62f3be88a64dc20,
a7b7896e5f330fec737cca618bbba9d2f6d84c36f820c1b4baed78985a092d92
result, different first party:
4cc36a1894290e85fa5e9480d3dc69b9d0e6aa8e7e80c6e60e4ee9bcddc76667,
38a5b1c9739161012bfd648abdd02d39cca8f7ab81125e90d518adff3b1e0f16,
412a20e4283a72afcb48e63700461f15ddb513f106dffa3245a989f40a51c14e,
1e15d85a90c1dcdfe1f1be7d90111d2fa402a357f0dcbc3df9b37ebcc8980431,
817c94b3c603f507abb9f7e5376af050568e64cfdafda2d08a20020dfdf3b26b
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
XMLHttpRequest cache
Similar to the newer Fetch API, any resource received may be cached by the browser. The cache is potentially vulnerable to cross-site tracking attack. |
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1
result, different first party: 2, 2, 2, 2
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same first party: 1, 1, 1, 1, 1
result, different first party: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
Navigation testsWhich browsers prevent websites from sharing tracking data when you click on a link?
When you click a hyperlink to navigate your browser from one site to another, certain browser APIs allow the first site to communicate to the second site. These privacy vulnerabilities can be fixed by introducing new limits on how much data is transfered between sites.', |
||||||||||||
|
document.referrer
The Referer [sic] request header is a mechanism used by browsers to let a website know where the user is visiting from. This header is inherently tracking users across websites. In recent times, browsers have switched to a policy of trimming a referrer to convey less tracking information, but Referer continues to convey cross-site tracking data by default. |
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (secret) => { /* do nothing */ }
read: () => document.referrer
result, same first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
sessionStorage
The sessionStorage API is similar to the localStorage API, but it does not persist across tabs or across browser sessions. Nonetheless, it can be used to track users if they navigate from one website to another. This tracking can be thwarted by partitioning sessionStorage between websites. |
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
cb504da5-0aaf-4f24-b320-7ec995969926,
7886bfd9-0009-4511-b07f-cc6c43bfe47f,
ba92590b-8faa-41c0-b17d-5c1e35deb58c,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
ed8f0590-e0e7-47b5-8b5b-158617bea66c,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
1d653492-bad6-4f49-9e00-76af7e05ab68,
a761212b-7906-442d-ab3d-e0dd5b37201b,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
857ab621-1ba4-42b6-af58-67c12c826ffa,
227e30f8-a368-4f8d-9345-feced2cc89ca,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
2205f167-0359-43cf-8380-c9fbf8fcc347,
a701abbd-6353-4d12-8510-f66a8280519d,
9440437c-dc36-4a87-ab99-e75a16d5e6bd,
d073840c-956c-4dca-86b3-3ba0adedaf5c,
16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
7a64bded-392b-4a86-bc5f-0d7df736fd55,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
1bae60da-6527-4c42-880c-620299628418,
f2646935-99a5-4364-ae37-a74e0ca093c7,
c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
0d686629-f5a4-4a47-9681-e3bbab11cca2,
359286ad-46ee-464a-a905-78164dce13f4,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
71e92e8d-94e3-457b-8fd1-8331cbe224d7,
725a5a6a-ab70-483c-ad00-c8333e9211ad,
241d464b-d97c-46f1-bdcd-7c323b9a2c02,
66355194-6850-41aa-84f1-8978a8d95e61,
6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
99fddb5e-06df-4c09-8126-c39a7c4dcad1,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
5ddecfab-3e5e-471d-a7ba-9a944259b66c,
ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
4ea6cb93-8d35-4320-a530-17146f8ccab6,
f7128dd5-85bc-41ab-8c57-60d7f65ac167,
a581206a-d228-4993-adad-bec906483c87,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
c7435ce9-d27a-4ac7-8776-b9077a74ac87,
b253b7fa-9a85-479b-80b4-98e7a3043ec4,
6b829494-be03-4ed0-9085-0f19cf3a971a,
620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party: , , ,
unsupported: false, false, false, false
passed: true, true, true, true
test failed: false, false, false, false
|
write: (secret) => window.sessionStorage.setItem('secret', secret)
read: () => window.sessionStorage.getItem('secret')
result, same first party:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
4fc367cf-2522-460c-9140-49e227554670,
107d3fad-f9a8-4da8-b7f1-7034e0707064,
3c7a7d4d-4100-4006-b848-bace0f76ea82,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
|
window.name
The window.name API allows websites to store data that will persist after the user has navigated the tab to a different website. This mechanism could be partitioned so that data is not allowed to persist between websites. |
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_cb504da5-0aaf-4f24-b320-7ec995969926,
name_7886bfd9-0009-4511-b07f-cc6c43bfe47f,
name_ba92590b-8faa-41c0-b17d-5c1e35deb58c,
name_d8cb64ac-44ba-4829-a5e0-94c751c1d9da,
name_1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_ed8f0590-e0e7-47b5-8b5b-158617bea66c,
name_cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
name_05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
name_ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
name_8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
result, different first party:
name_ed8f0590-e0e7-47b5-8b5b-158617bea66c,
name_cff4f3bd-8da4-4b6d-9512-9b0fb9701478,
name_05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d,
name_ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a,
name_8d9d4b96-dcb2-4536-a5d4-40607c07f1b1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2,
name_1d653492-bad6-4f49-9e00-76af7e05ab68,
name_a761212b-7906-442d-ab3d-e0dd5b37201b,
name_6e1bb85c-8c9b-4479-a2d6-821f95f33f06,
name_2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_857ab621-1ba4-42b6-af58-67c12c826ffa,
name_227e30f8-a368-4f8d-9345-feced2cc89ca,
name_6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
name_c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
name_9792d392-ee18-4783-9a10-79fc448d5ac9
result, different first party:
name_857ab621-1ba4-42b6-af58-67c12c826ffa,
name_227e30f8-a368-4f8d-9345-feced2cc89ca,
name_6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6,
name_c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4,
name_9792d392-ee18-4783-9a10-79fc448d5ac9
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_2205f167-0359-43cf-8380-c9fbf8fcc347,
name_a701abbd-6353-4d12-8510-f66a8280519d,
name_9440437c-dc36-4a87-ab99-e75a16d5e6bd,
name_d073840c-956c-4dca-86b3-3ba0adedaf5c,
name_16cc67a7-5638-48f1-8173-90e301a4c356
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_7a64bded-392b-4a86-bc5f-0d7df736fd55,
name_6a8c8db3-0dfd-4b46-9168-eff296fd0c5b,
name_1bae60da-6527-4c42-880c-620299628418,
name_f2646935-99a5-4364-ae37-a74e0ca093c7,
name_c879dd15-54f8-45d8-8085-b803a661d5b9
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_8b9e0853-566f-4f24-8573-0fbd8c91ce6e,
name_0d686629-f5a4-4a47-9681-e3bbab11cca2,
name_359286ad-46ee-464a-a905-78164dce13f4,
name_9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b,
name_51b4fba0-5041-4255-a726-4c169ec19ca7
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_71e92e8d-94e3-457b-8fd1-8331cbe224d7,
name_725a5a6a-ab70-483c-ad00-c8333e9211ad,
name_241d464b-d97c-46f1-bdcd-7c323b9a2c02,
name_66355194-6850-41aa-84f1-8978a8d95e61,
name_6a86d87c-711d-4046-aa36-4dbcddd70997
result, different first party:
name_71e92e8d-94e3-457b-8fd1-8331cbe224d7,
name_725a5a6a-ab70-483c-ad00-c8333e9211ad,
name_241d464b-d97c-46f1-bdcd-7c323b9a2c02,
name_66355194-6850-41aa-84f1-8978a8d95e61,
name_6a86d87c-711d-4046-aa36-4dbcddd70997
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_99fddb5e-06df-4c09-8126-c39a7c4dcad1,
name_3f2adab2-c752-4730-9a78-0f4e5cc21dbb,
name_b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff,
name_5ddecfab-3e5e-471d-a7ba-9a944259b66c,
name_ee63836e-bf83-4000-9818-cbfd840f9c15
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_4ea6cb93-8d35-4320-a530-17146f8ccab6,
name_f7128dd5-85bc-41ab-8c57-60d7f65ac167,
name_a581206a-d228-4993-adad-bec906483c87,
name_9de80282-8dcf-40e8-bfbe-2fc76001a2fc,
name_3db91538-26cf-48aa-b012-bdc01d802ad3
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_c7435ce9-d27a-4ac7-8776-b9077a74ac87,
name_b253b7fa-9a85-479b-80b4-98e7a3043ec4,
name_6b829494-be03-4ed0-9085-0f19cf3a971a,
name_620c4643-8b73-436e-8c99-b944bbba4d42
result, different first party:
name_c7435ce9-d27a-4ac7-8776-b9077a74ac87,
name_b253b7fa-9a85-479b-80b4-98e7a3043ec4,
name_6b829494-be03-4ed0-9085-0f19cf3a971a,
name_620c4643-8b73-436e-8c99-b944bbba4d42
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (secret) => { window.name = 'name_' + secret; }
read: () => window.name
result, same first party:
name_0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
name_4fc367cf-2522-460c-9140-49e227554670,
name_107d3fad-f9a8-4da8-b7f1-7034e0707064,
name_3c7a7d4d-4100-4006-b848-bace0f76ea82,
name_9a6f6fb3-8594-46f0-84c7-05e6e2d85491
result, different first party:
name_0c2d7904-6d65-4e1d-862b-1c181b86c8f6,
name_4fc367cf-2522-460c-9140-49e227554670,
name_107d3fad-f9a8-4da8-b7f1-7034e0707064,
name_3c7a7d4d-4100-4006-b848-bace0f76ea82,
name_9a6f6fb3-8594-46f0-84c7-05e6e2d85491
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
HTTPS testsWhich browsers prevent unencrypted network connections?
HTTPS is the protocol that web browsers use to connect securely to websites. When HTTPS is being used, the connection is encrypted so that third parties on the network cannot read content being sent between the server and your browser. In the past, insecure connections were the default and websites would need to actively request that a browser use HTTPS. Now the status quo is shifting, and browser makers are moving toward a world where HTTPS is the default protocol.` |
||||||||||||
|
Insecure website warning
Checks to see if the browser stops loading an insecure website and warns the user before giving them the option to continue. Known as HTTPS-Only Mode in some browsers. |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: true, true, true, true, true result: Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: true, true, true, true, true result: Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded |
passed: true, true, true, true, true result: Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: true, true, true, true, true result: Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded, Insecure website never loaded |
passed: false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: false, false, false, false, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
|
Upgradable address
Checks to see if an insecure address entered into the browser's address bar is upgraded to HTTPS whenever possible. |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: false, false, false, false, false passed: false, false, false, false, false |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true passed: true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
|
Upgradable hyperlink
Checks to see if the user has clicked on a hyperlink to an insecure address, if the browser upgrades that address to HTTPS whenever possible. |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: false, false, false, false, false passed: false, false, false, false, false |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
upgraded: true, true, true, true passed: true, true, true, true |
upgraded: true, true, true, true, true passed: true, true, true, true, true |
|
Upgradable image
Checks to see if the browser attempts to upgrade an insecure address for an image to HTTPS whenever possible. |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true result: upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
|
Upgradable script
Checks to see if the browser attempts to upgrade an insecure address for an script to HTTPS whenever possible. |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true, true result: blocked, blocked, blocked, blocked |
passed: true, true, true, true, true result: blocked, blocked, blocked, blocked, blocked |
|
Misc testsWhich browsers provide additional assorted privacy protections?
This category includes tests for the presence of miscellaneous privacy features |
||||||||||||
|
ECH enabled
Encrypted Client Hello (ECH) is a new protocol that hides the website you are visiting from third-party network eavesdroppers. |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: plaintext passed: false, false, false, false, false |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: plaintext passed: false, false, false, false, false |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: encrypted passed: true, true, true, true, true |
SNI_status: plaintext passed: false, false, false, false, false |
SNI_status: plaintext passed: false, false, false, false, false |
SNI_status: encrypted passed: true, true, true, true |
SNI_status: encrypted passed: true, true, true, true, true |
|
GPC enabled first-party
The Global Privacy Control is an HTTP header that can be sent by a browser to instruct a website not to sell the user's personal data to third parties. This test checks to see if the GPC header is sent by default to the top-level website. |
header value: 1 passed: true, true, true, true, true |
header value: undefined passed: false, false, false, false, false |
header value: 1 passed: true, true, true, true, true |
header value: undefined passed: false, false, false, false, false |
header value: undefined passed: false, false, false, false, false |
header value: 1 passed: true, true, true, true, true |
header value: 1 passed: true, true, true, true, true |
header value: undefined passed: false, false, false, false, false |
header value: undefined passed: false, false, false, false, false |
header value: 1 passed: true, true, true, true, true |
header value: undefined passed: false, false, false, false |
header value: undefined passed: false, false, false, false, false |
|
GPC enabled third-party
The Global Privacy Control is an HTTP header that can be sent by a browser to instruct a visited website not to sell the user's personal data to other parties. This test checks to see if the GPC header is sent to third-party elements on the web page. |
sec-gpc: 1 passed: true, true, true, true, true |
passed: false, false, false, false, false |
passed: false, false, false, false, false |
passed: false, false, false, false, false |
passed: false, false, false, false, false |
sec-gpc: 1 passed: true, true, true, true, true |
sec-gpc: 1 passed: true, true, true, true, true |
passed: false, false, false, false, false |
passed: false, false, false, false, false |
sec-gpc: 1 passed: true, true, true, true, true |
passed: false, false, false, false |
passed: false, false, false, false, false |
|
IP address hidden
IP addresses can be used to uniquely identify a large percentage of users. A proxy, VPN, or Tor can mask a user's IP address. |
passed: false, false, false, true, false |
passed: true, false, false, false, false |
passed: false, false, false, true, true |
passed: true, false, false, true, false |
passed: true, false, true, true, false |
passed: true, false, true, false, false |
passed: true, false, true, false, false |
passed: true, true, false, true, false |
passed: false, true, true, true, false |
passed: true, true, true, true, true |
passed: false, true, true, false |
passed: false, true, false, false, true |
|
Stream isolation
Browsers that use Tor can use a different Tor circuit per top-level website. |
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: false, false, false, false, false
readSameFirstParty:
2620:18c:0:192::e0:186,
2001:67c:e60:c0c:192:42:116:97,
2a0b:f4c2:2::46,
2620:7:6003::150,
2a03:e600:100::7
readDifferentFirstParty:
2620:7:6003::ffff:c759:e644,
2602:f7d8:0:1337::79,
2a0b:f4c2:1::1,
2001:67c:289c:4::78,
2001:67c:289c:2::36
passed: true, true, true, true, true
testFailed: false, false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false
|
write: () => {
if (!usingTor) {
throw new Error('Unsupported');
}
}
read: async () => {
if (usingTor) {
return ipAddress;
} else {
throw new Error('Unsupported');
}
}
unsupported: true, true, true, true, true
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: false, false, false, false, false
|
|
Tor enabled
The Tor network sends the browser's web requests through a series of relays to hide a user's IP address, thereby helping to mask their identity and location. This test checks to see if the Tor network is being used by default. |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
IsTorExit: true, true, true, true, true passed: true, true, true, true, true |
IsTorExit: false, false, false, false passed: false, false, false, false |
IsTorExit: false, false, false, false, false passed: false, false, false, false, false |
|
Fingerprinting resistance testsWhich browsers hide what's unique about your device?
Fingerprinting is a technique trackers use to uniquely identify you as you browse the web. A fingerprinting script will measure several characteristics of your browser and, combining this data, will build a fingerprint that may uniquely identify you among web users. Browsers can introduce countermeasures, such as minimizing the distinguishing information disclosed by certain web APIs so your browser is harder to pick out from the crowd (so-called 'fingerprinting resistance').`, |
||||||||||||
|
System font detection
Web pages can detect the presence of a font installed on the user's system. The presence or absence of various fonts is commonly used to fingerprint users. |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false |
|
Tracking query parameter testsWhich browsers remove URL parameters that can track you?
When you browse from one web page to another, tracking companies will frequently attach a 'tracking query parameter' to the address of the second web page. That query parameter may contain a unique identifier that tracks you individually as you browse the web. And these query parameters are frequently synchronized with cookies, making them a powerful tracking vector. Web browsers can protect you from known tracking query parameters by stripping them from web addresses before your browser sends them. (The set of tracking query parameters tested here was largely borrowed from Brave.)` |
||||||||||||
|
__hsfp
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
__hssc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
__hstc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
__s
Drip.com email address tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
_hsenc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
_openstat
Yandex tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
dclid
DoubleClick Click ID (Google) |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
fbclid
Facebook Click Identifier |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
gclid
Google Click Identifier |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
hsCtaTracking
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
mc_eid
Mailchimp Email ID (email recipient's address) |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
mkt_tok
Adobe Marketo tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
ml_subscriber
MailerLite email tracking |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 06898038149523855 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
ml_subscriber_hash
MailerLite email tracking |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 06898038149523855 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
msclkid
Microsoft Click ID |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
oly_anon_id
Omeda marketing 'anonymous' customer id |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
oly_enc_id
Omeda marketing 'known' customer id |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
rb_clickid
Unknown high-entropy tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 06898038149523855 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
s_cid
Adobe Site Catalyst tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 06898038149523855 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
vero_conv
Vero tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 06898038149523855 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
vero_id
Vero tracking parameter |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
wickedid
Wicked Reports e-commerce tracking |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
yclid
Yandex Click ID |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 7734347893826989 passed: false, false, false, false |
value: 7734347893826989 passed: false, false, false, false, false |
|
Tracker content blocking testsWhich browsers block important known tracking scripts and pixels?
When you visit a web page, it frequently has third-party embedded tracking content, such as scripts and tracking pixels. These embedded components spy on you. Some browsers and browser extensions maintain list of tracking companies and block their content from being loaded. This section checks to see if a browser blocks 20 of the largest trackers listed by https://whotracks.me.` |
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|
Adobe
Tests whether the browser blocks the page from loading the tracker at https://munchkin.marketo.net/munchkin.js |
url: https://munchkin.marketo.net/munchkin.js passed: true, true, true, true, true |
url: https://munchkin.marketo.net/munchkin.js passed: false |
url: https://munchkin.marketo.net/munchkin.js passed: true, true, true, true, true |
url: https://munchkin.marketo.net/munchkin.js passed: , false |
url: https://munchkin.marketo.net/munchkin.js passed: , false |
url: https://munchkin.marketo.net/munchkin.js passed: true, true, true, true, true |
url: https://munchkin.marketo.net/munchkin.js passed: true, true, true, true, true |
url: https://munchkin.marketo.net/munchkin.js |
url: https://munchkin.marketo.net/munchkin.js passed: false, false |
url: https://munchkin.marketo.net/munchkin.js passed: , false |
url: https://munchkin.marketo.net/munchkin.js passed: , false |
url: https://munchkin.marketo.net/munchkin.js |
|
Adobe Audience Manager
Tests whether the browser blocks the page from loading the tracker at https://dpm.demdex.net/ibs |
url: https://dpm.demdex.net/ibs passed: true, true, true, true, true |
url: https://dpm.demdex.net/ibs passed: false, false, false |
url: https://dpm.demdex.net/ibs passed: true, true, true, true, true |
url: https://dpm.demdex.net/ibs passed: false, false, false, false |
url: https://dpm.demdex.net/ibs passed: , false, false, false |
url: https://dpm.demdex.net/ibs passed: true, true, true, true, true |
url: https://dpm.demdex.net/ibs passed: true, true, true, true, true |
url: https://dpm.demdex.net/ibs passed: false, false |
url: https://dpm.demdex.net/ibs passed: false, false, false |
url: https://dpm.demdex.net/ibs passed: false, false, false, false, false |
url: https://dpm.demdex.net/ibs passed: false, false, false, false |
url: https://dpm.demdex.net/ibs passed: , false |
|
Amazon adsystem
Tests whether the browser blocks the page from loading the tracker at https://s.amazon-adsystem.com/dcm |
url: https://s.amazon-adsystem.com/dcm passed: true, true, true, true, true |
url: https://s.amazon-adsystem.com/dcm passed: false, false, false |
url: https://s.amazon-adsystem.com/dcm passed: true, true, true, true, true |
url: https://s.amazon-adsystem.com/dcm passed: , false |
url: https://s.amazon-adsystem.com/dcm passed: , false, false, false, false |
url: https://s.amazon-adsystem.com/dcm passed: true, true, true, true, true |
url: https://s.amazon-adsystem.com/dcm passed: true, true, true, true, true |
url: https://s.amazon-adsystem.com/dcm passed: false |
url: https://s.amazon-adsystem.com/dcm passed: false, false, false |
url: https://s.amazon-adsystem.com/dcm passed: , false, false, false |
url: https://s.amazon-adsystem.com/dcm passed: , false, false |
url: https://s.amazon-adsystem.com/dcm passed: , false, false |
|
AppNexus
Tests whether the browser blocks the page from loading the tracker at https://ib.adnxs.com/px?id=178248&t=1 |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: true, true, true, true, true |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: true, true, true, true, true |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: true, true, true, true, true |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: true, true, true, true, true |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false, false, false |
url: https://ib.adnxs.com/px?id=178248&t=1 passed: false, false |
|
Bing Ads
Tests whether the browser blocks the page from loading the tracker at https://bat.bing.com/bat.js |
url: https://bat.bing.com/bat.js passed: true, true, true, true, true |
url: https://bat.bing.com/bat.js passed: false |
url: https://bat.bing.com/bat.js passed: true, true, true, true, true |
url: https://bat.bing.com/bat.js |
url: https://bat.bing.com/bat.js passed: , false |
url: https://bat.bing.com/bat.js passed: true, true, true, true, true |
url: https://bat.bing.com/bat.js passed: true, true, true, true, true |
url: https://bat.bing.com/bat.js passed: , false |
url: https://bat.bing.com/bat.js passed: false, false, false, false, false |
url: https://bat.bing.com/bat.js passed: , false, false |
url: https://bat.bing.com/bat.js |
url: https://bat.bing.com/bat.js |
|
Chartbeat
Tests whether the browser blocks the page from loading the tracker at https://static.chartbeat.com/js/chartbeat.js |
url: https://static.chartbeat.com/js/chartbeat.js passed: true, true, true, true, true |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: true, true, true, true, true |
url: https://static.chartbeat.com/js/chartbeat.js passed: true, true, true, true, true |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: false, false, false, false, false |
|
Criteo
Tests whether the browser blocks the page from loading the tracker at https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: true, true, true, true, true |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: false, false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: true, true, true, true, true |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: , false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: , false, false, false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: true, true, true, true, true |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: true, true, true, true, true |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: false, false, false, false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: , false, false |
url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx passed: , false, false |
|
DoubleClick (Google)
Tests whether the browser blocks the page from loading the tracker at https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: true, true, true, true, true |
url: https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: true, true, true, true, true |
url: https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: true, true, true, true, true |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: true, true, true, true, true |
url: https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: , false, false |
url: https://securepubads.g.doubleclick.net/static/glade.js |
url: https://securepubads.g.doubleclick.net/static/glade.js passed: , false |
url: https://securepubads.g.doubleclick.net/static/glade.js |
|
Facebook tracking
Tests whether the browser blocks the page from loading the tracker at https://connect.facebook.net/en_US/fbevents.js |
url: https://connect.facebook.net/en_US/fbevents.js passed: true, true, true, true, true |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: true, true, true, true, true |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: , false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: true, true, true, true, true |
url: https://connect.facebook.net/en_US/fbevents.js passed: true, true, true, true, true |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false |
url: https://connect.facebook.net/en_US/fbevents.js passed: false, false, false, false, false |
|
Google (third-party ad pixel)
Tests whether the browser blocks the page from loading the tracker at https://www.google.com/pagead/1p-user-list/ |
url: https://www.google.com/pagead/1p-user-list/ passed: true, true, true, true, true |
url: https://www.google.com/pagead/1p-user-list/ passed: false |
url: https://www.google.com/pagead/1p-user-list/ passed: true, true, true, true, true |
url: https://www.google.com/pagead/1p-user-list/ |
url: https://www.google.com/pagead/1p-user-list/ passed: , false |
url: https://www.google.com/pagead/1p-user-list/ passed: true, true, true, true, true |
url: https://www.google.com/pagead/1p-user-list/ passed: true, true, true, true, true |
url: https://www.google.com/pagead/1p-user-list/ |
url: https://www.google.com/pagead/1p-user-list/ |
url: https://www.google.com/pagead/1p-user-list/ passed: , false, false, false |
url: https://www.google.com/pagead/1p-user-list/ passed: , false, false |
url: https://www.google.com/pagead/1p-user-list/ passed: , false |
|
Google Analytics
Tests whether the browser blocks the page from loading the tracker at https://google-analytics.com/urchin.js |
url: https://google-analytics.com/urchin.js passed: true, true, true, true, true |
url: https://google-analytics.com/urchin.js |
url: https://google-analytics.com/urchin.js passed: true, true, true, true, true |
url: https://google-analytics.com/urchin.js passed: , false, false |
url: https://google-analytics.com/urchin.js passed: , false, false |
url: https://google-analytics.com/urchin.js passed: true, true, true, true, true |
url: https://google-analytics.com/urchin.js passed: true, true, true, true, true |
url: https://google-analytics.com/urchin.js passed: false, false, false |
url: https://google-analytics.com/urchin.js passed: , false, false |
url: https://google-analytics.com/urchin.js passed: , false |
url: https://google-analytics.com/urchin.js passed: , false, false |
url: https://google-analytics.com/urchin.js passed: false, false, false, false, false |
|
Google Tag Manager
Tests whether the browser blocks the page from loading the tracker at https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true, true, true, true, true |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true, true, true, true, true |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false, false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true, true, true, true, true |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true, true, true, true, true |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: , false, false, false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false, false, false |
url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false, false, false |
|
Index Exchange
Tests whether the browser blocks the page from loading the tracker at https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true, true, true, true, true |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true, true, true, true, true |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false, false, false, false, false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true, true, true, true, true |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true, true, true, true, true |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: , false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false, false, false, false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false, false, false, false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: , false, false |
url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 |
|
New Relic
Tests whether the browser blocks the page from loading the tracker at https://js-agent.newrelic.com/nr-1212.min.js |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: true, true, true, true, true |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: true, true, true, true, true |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: true, true, true, true, true |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: true, true, true, true, true |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: false, false, false, false, false |
|
Quantcast
Tests whether the browser blocks the page from loading the tracker at https://pixel.quantserve.com/pixel |
url: https://pixel.quantserve.com/pixel passed: true, true, true, true, true |
url: https://pixel.quantserve.com/pixel passed: , false |
url: https://pixel.quantserve.com/pixel passed: true, true, true, true, true |
url: https://pixel.quantserve.com/pixel passed: false, false, false |
url: https://pixel.quantserve.com/pixel passed: false, false, false, false, false |
url: https://pixel.quantserve.com/pixel passed: true, true, true, true, true |
url: https://pixel.quantserve.com/pixel passed: true, true, true, true, true |
url: https://pixel.quantserve.com/pixel passed: false, false |
url: https://pixel.quantserve.com/pixel passed: false, false, false |
url: https://pixel.quantserve.com/pixel passed: , false, false, false, false |
url: https://pixel.quantserve.com/pixel passed: false, false |
url: https://pixel.quantserve.com/pixel |
|
Scorecard Research Beacon
Tests whether the browser blocks the page from loading the tracker at https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true, true, true, true, true |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: , false |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true, true, true, true, true |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true, true, true, true, true |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true, true, true, true, true |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false, false |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
url: https://sb.scorecardresearch.com/internal-c2/default/cs.js |
|
Taboola
Tests whether the browser blocks the page from loading the tracker at https://trc.taboola.com/futureplc-tomsguide/trc/3/json |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: true, true, true, true, true |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: true, true, true, true, true |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: true, true, true, true, true |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: true, true, true, true, true |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false |
url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json passed: false, false, false, false, false |
|
Twitter pixel
Tests whether the browser blocks the page from loading the tracker at https://t.co/i/adsct |
url: https://t.co/i/adsct passed: true, true, true, true, true |
url: https://t.co/i/adsct passed: false, false, false |
url: https://t.co/i/adsct passed: true, true, true, true, true |
url: https://t.co/i/adsct |
url: https://t.co/i/adsct passed: , false, false, false, false |
url: https://t.co/i/adsct passed: true, true, true, true, true |
url: https://t.co/i/adsct passed: true, true, true, true, true |
url: https://t.co/i/adsct passed: , false |
url: https://t.co/i/adsct passed: false, false, false |
url: https://t.co/i/adsct passed: , false, false, false |
url: https://t.co/i/adsct passed: , false, false, false |
url: https://t.co/i/adsct passed: false, false, false |
|
Yandex Ads
Tests whether the browser blocks the page from loading the tracker at https://yandex.ru/ads/system/header-bidding.js |
url: https://yandex.ru/ads/system/header-bidding.js passed: true, true, true, true, true |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: true, true, true, true, true |
url: https://yandex.ru/ads/system/header-bidding.js passed: true, true, true, true, true |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: false, false, false, false, false |
|
Tracking cookie protection testsWhich browsers block important known tracking cookies?
A large fraction of web pages on the web have hidden third-party trackers that read and write cookies in your browser. These cookies can be used to track your browsing across websites. This section checks to see if a browser stops cross-site tracking by cookies from 20 of the largest trackers listed by https://whotracks.me.`, |
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|
Adobe
Tests whether the browser stops cookies from munchkin.marketo.net from tracking users across websites. |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://munchkin.marketo.net/munchkin.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: false, false, false, false, false |
|
Adobe Audience Manager
Tests whether the browser stops cookies from dpm.demdex.net from tracking users across websites. |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://dpm.demdex.net/ibs cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://dpm.demdex.net/ibs cookieFound: false, false, false, true, false |
|
Amazon adsystem
Tests whether the browser stops cookies from s.amazon-adsystem.com from tracking users across websites. |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://s.amazon-adsystem.com/dcm cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://s.amazon-adsystem.com/dcm cookieFound: false, false, false, true, false |
|
AppNexus
Tests whether the browser stops cookies from ib.adnxs.com from tracking users across websites. |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: false, false, false, false, false |
|
Bing Ads
Tests whether the browser stops cookies from bat.bing.com from tracking users across websites. |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://bat.bing.com/bat.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://bat.bing.com/bat.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://bat.bing.com/bat.js cookieFound: false, false, false, false, false |
|
Chartbeat
Tests whether the browser stops cookies from static.chartbeat.com from tracking users across websites. |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://static.chartbeat.com/js/chartbeat.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: false, false, false, false, false |
|
Criteo
Tests whether the browser stops cookies from dis.criteo.com from tracking users across websites. |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: false, false, false, true, false |
|
DoubleClick (Google)
Tests whether the browser stops cookies from securepubads.g.doubleclick.net from tracking users across websites. |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: false, false, false, true, false |
|
Facebook tracking
Tests whether the browser stops cookies from connect.facebook.net from tracking users across websites. |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://connect.facebook.net/en_US/fbevents.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: false, false, false, false, false |
|
Google (third-party ad pixel)
Tests whether the browser stops cookies from www.google.com from tracking users across websites. |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://www.google.com/pagead/1p-user-list/ cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: false, false, false, true, false |
|
Google Analytics
Tests whether the browser stops cookies from google-analytics.com from tracking users across websites. |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://google-analytics.com/urchin.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://google-analytics.com/urchin.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://google-analytics.com/urchin.js cookieFound: false, false, false, true, false |
|
Google Tag Manager
Tests whether the browser stops cookies from www.googletagmanager.com from tracking users across websites. |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: false, false, false, true, false |
|
Index Exchange
Tests whether the browser stops cookies from dsum-sec.casalemedia.com from tracking users across websites. |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: false, false, false, true, false |
|
New Relic
Tests whether the browser stops cookies from js-agent.newrelic.com from tracking users across websites. |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: false, false, false, false, false |
|
Quantcast
Tests whether the browser stops cookies from pixel.quantserve.com from tracking users across websites. |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://pixel.quantserve.com/pixel cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://pixel.quantserve.com/pixel cookieFound: false, false, false, true, false |
|
Scorecard Research Beacon
Tests whether the browser stops cookies from sb.scorecardresearch.com from tracking users across websites. |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: false, false, false, false, false |
|
Taboola
Tests whether the browser stops cookies from trc.taboola.com from tracking users across websites. |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: false, false, false, false, false |
|
Twitter pixel
Tests whether the browser stops cookies from t.co from tracking users across websites. |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://t.co/i/adsct cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://t.co/i/adsct cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://t.co/i/adsct cookieFound: false, false, false, false |
passed: true, true, true, false, true url: https://t.co/i/adsct cookieFound: false, false, false, true, false |
|
Yandex Ads
Tests whether the browser stops cookies from yandex.ru from tracking users across websites. |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: false, false, false, false, false url: https://yandex.ru/ads/system/header-bidding.js cookieFound: true, true, true, true, true |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, false, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, true, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
passed: true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false |
passed: true, true, true, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: false, false, false, false, false |
|
Cross-session first-party tracking testsWhich browsers prevent websites from tracking you across browser sessions?
A common vulnerability of web browsers is that they allow websites ("first parties") to 'tag' your browser with some tracking data. This tag can be used to re-identify you when you return to a website you visited before. This category of leaks can be prevented by browser if they clean or isolate data between browser sessions. (In cases where a user has logged into a website or entered detailed information, it may be justifiable for a browser to retain information across sessions. These tests check when no such justification exists: when you have entered no significant information into a website, will the browser still retain data that allows you to be tracked across sessions?)
|
||||||||||||
|
Alt-Svc
Alt-Svc allows the server to indicate to the web browser that a resource should be loaded on a different server. Because this is a persistent setting, it could be used to track users across websites if it is not correctly partitioned. |
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h3, h3, h3, h3, h3
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h3, h3, h3, h3, h3
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3
result, different session: h3, h3, h3, h3
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CacheStorage
The Cache API is a content storage mechanism originally introduced to support ServiceWorkers. If the same Cache object is accessible to multiple websites, it can be abused to track users. |
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p,
1bae60da-6527-4c42-880c-620299628418_1p,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p
result, different session:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p,
359286ad-46ee-464a-a905-78164dce13f4_1p,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p
result, different session:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p,
a581206a-d228-4993-adad-bec906483c87_1p,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p
result, different session:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
cookie (HTTP)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p_http,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p_http,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p_http,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p_http,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p_http
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p_http,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p_http,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p_http,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p_http,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p_http
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p_http,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p_http,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p_http,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p_http,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p_http
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p_http,
a701abbd-6353-4d12-8510-f66a8280519d_1p_http,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p_http,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p_http,
16cc67a7-5638-48f1-8173-90e301a4c356_1p_http
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p_http,
a701abbd-6353-4d12-8510-f66a8280519d_1p_http,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p_http,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p_http,
16cc67a7-5638-48f1-8173-90e301a4c356_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p_http,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p_http,
1bae60da-6527-4c42-880c-620299628418_1p_http,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p_http,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p_http,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p_http,
359286ad-46ee-464a-a905-78164dce13f4_1p_http,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p_http,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p_http,
66355194-6850-41aa-84f1-8978a8d95e61_1p_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p_http
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p_http,
66355194-6850-41aa-84f1-8978a8d95e61_1p_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p_http,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p_http,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p_http,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p_http,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p_http
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p_http,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p_http,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p_http,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p_http,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p_http,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p_http,
a581206a-d228-4993-adad-bec906483c87_1p_http,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p_http,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p_http,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p_http,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p_http,
620c4643-8b73-436e-8c99-b944bbba4d42_1p_http
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p_http,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p_http,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p_http,
620c4643-8b73-436e-8c99-b944bbba4d42_1p_http
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p_http,
4fc367cf-2522-460c-9140-49e227554670_1p_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p_http
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p_http,
4fc367cf-2522-460c-9140-49e227554670_1p_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
cookie (JS)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p_js,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p_js,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p_js,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p_js,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p_js
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p_js,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p_js,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p_js,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p_js,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p_js
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p_js,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p_js,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p_js,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p_js,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p_js
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p_js,
a701abbd-6353-4d12-8510-f66a8280519d_1p_js,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p_js,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p_js,
16cc67a7-5638-48f1-8173-90e301a4c356_1p_js
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p_js,
a701abbd-6353-4d12-8510-f66a8280519d_1p_js,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p_js,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p_js,
16cc67a7-5638-48f1-8173-90e301a4c356_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p_js,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p_js,
1bae60da-6527-4c42-880c-620299628418_1p_js,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p_js,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p_js,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p_js,
359286ad-46ee-464a-a905-78164dce13f4_1p_js,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p_js,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p_js,
66355194-6850-41aa-84f1-8978a8d95e61_1p_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p_js
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p_js,
66355194-6850-41aa-84f1-8978a8d95e61_1p_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p_js,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p_js,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p_js,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p_js,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p_js
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p_js,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p_js,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p_js,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p_js,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p_js,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p_js,
a581206a-d228-4993-adad-bec906483c87_1p_js,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p_js,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p_js,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p_js,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p_js,
620c4643-8b73-436e-8c99-b944bbba4d42_1p_js
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p_js,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p_js,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p_js,
620c4643-8b73-436e-8c99-b944bbba4d42_1p_js
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p_js,
4fc367cf-2522-460c-9140-49e227554670_1p_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p_js
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p_js,
4fc367cf-2522-460c-9140-49e227554670_1p_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CookieStore
The Cookie Store API is an alternative asynchronous API for managing cookies, supported by some browsers. |
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p,
1bae60da-6527-4c42-880c-620299628418_1p,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p,
359286ad-46ee-464a-a905-78164dce13f4_1p,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p,
a581206a-d228-4993-adad-bec906483c87_1p,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CSS cache
CSS stylesheets are cached, and if that cache is shared between websites, it can be used to track users across sites. |
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_5529724726973739,
fake_1564126110578392,
fake_13920696034759295,
fake_9180530897301775,
fake_3733658310647048
result, different session:
fake_5529724726973739,
fake_1564126110578392,
fake_13920696034759295,
fake_9180530897301775,
fake_3733658310647048
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_7605305516231973,
fake_1424781902726746,
fake_6583559168912725,
fake_5386283468955839,
fake_4948870720434826
result, different session:
fake_7605305516231973,
fake_1424781902726746,
fake_6583559168912725,
fake_5386283468955839,
fake_4948870720434826
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_9141780418498475,
fake_035408941856986065,
fake_9347930223056664,
fake_6379526354595584,
fake_5515372657009017
result, different session:
fake_9141780418498475,
fake_035408941856986065,
fake_9347930223056664,
fake_6379526354595584,
fake_5515372657009017
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_8120570836599736,
fake_7516540585330347,
fake_6081858089620202,
fake_8747001263710004,
fake_16717665598801923
result, different session:
fake_8120570836599736,
fake_7516540585330347,
fake_6081858089620202,
fake_8747001263710004,
fake_16717665598801923
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_5408705448632449,
fake_39313551770102184,
fake_8502626532554873,
fake_3123361938608693,
fake_9105240963694563
result, different session:
fake_5408705448632449,
fake_39313551770102184,
fake_8502626532554873,
fake_3123361938608693,
fake_9105240963694563
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_30220616711486037,
fake_10795298961055488,
fake_7450292669232783,
fake_11423100488949922,
fake_9567315535366101
result, different session:
fake_6981962895065799,
fake_9204117089177644,
fake_580206149387662,
fake_9828730204470715,
fake_8719718239021881
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_17500995012925946,
fake_6684954723545562,
fake_3801736031622911,
fake_403068150472669,
fake_18351392001436118
result, different session:
fake_8625169751058959,
fake_15874756456066152,
fake_6174514037599947,
fake_06230600696602462,
fake_19135065684935726
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_05723079121247654,
fake_13598375500441517,
fake_14099381624551666,
fake_5933273218380133,
fake_7521149734441104
result, different session:
fake_05723079121247654,
fake_13598375500441517,
fake_14099381624551666,
fake_5933273218380133,
fake_7521149734441104
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_8879363943218126,
fake_7696101438289491,
fake_4397278692302715,
fake_6672286906722005,
fake_8084535929706349
result, different session:
fake_8879363943218126,
fake_7696101438289491,
fake_4397278692302715,
fake_6672286906722005,
fake_8084535929706349
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_21274842859140564,
fake_19713113407402183,
fake_8903136465486081,
fake_9607194947009803,
fake_6047004142702326
result, different session:
fake_14642650174571425,
fake_752940043321396,
fake_1926771493190753,
fake_7357412441306486,
fake_7034963410856743
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_875314980487411,
fake_597700540560907,
fake_17520988493381484,
fake_9490539236993047
result, different session:
fake_875314980487411,
fake_597700540560907,
fake_17520988493381484,
fake_9490539236993047
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_7601332822608358,
fake_6043701818609497,
fake_5156935335208135,
fake_21458764804999153,
fake_8834344519447512
result, different session:
fake_7601332822608358,
fake_6043701818609497,
fake_5156935335208135,
fake_21458764804999153,
fake_8834344519447512
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
favicon cache
A favicon is an icon that represents a website, typically shown in browser tab and bookmarks menu. If the favicon cache is not partitioned, it can be used to track users across websites. |
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 2, 2, 2, 2, 2
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
fetch cache
When a resource is received via the Fetch API, it is frequently cached. That cache can potentially be abused for cross-site tracking. |
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
font cache
Web fonts are sometimes stored in their own cache, which is vulnerable to being abused for cross-site tracking. |
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
iframe cache
An iframe is an element in a web page than allows websites to embed a second web page. Caching of this web page could be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
image cache
Caching of images in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
indexedDB
The IndexedDB API exposes a transactional database to web pages. That database can be used to track users across websites, unless it is partitioned. |
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p,
1bae60da-6527-4c42-880c-620299628418_1p,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p,
359286ad-46ee-464a-a905-78164dce13f4_1p,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p,
a581206a-d228-4993-adad-bec906483c87_1p,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
localStorage
The localStorage API gives websites access to a key-value database that will remain available across visits. If the localStorage API is not partitioned or blocked, it can also be used to track users across websites. |
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_1p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_1p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_1p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_1p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_1p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_1p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_1p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_1p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_1p,
1d653492-bad6-4f49-9e00-76af7e05ab68_1p,
a761212b-7906-442d-ab3d-e0dd5b37201b_1p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_1p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_1p,
227e30f8-a368-4f8d-9345-feced2cc89ca_1p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_1p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_1p,
9792d392-ee18-4783-9a10-79fc448d5ac9_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_1p,
a701abbd-6353-4d12-8510-f66a8280519d_1p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_1p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_1p,
16cc67a7-5638-48f1-8173-90e301a4c356_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_1p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_1p,
1bae60da-6527-4c42-880c-620299628418_1p,
f2646935-99a5-4364-ae37-a74e0ca093c7_1p,
c879dd15-54f8-45d8-8085-b803a661d5b9_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
8b9e0853-566f-4f24-8573-0fbd8c91ce6e_1p,
0d686629-f5a4-4a47-9681-e3bbab11cca2_1p,
359286ad-46ee-464a-a905-78164dce13f4_1p,
9efb0dfb-9ca8-48f9-836d-e4ba77bdde7b_1p,
51b4fba0-5041-4255-a726-4c169ec19ca7_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_1p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_1p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_1p,
66355194-6850-41aa-84f1-8978a8d95e61_1p,
6a86d87c-711d-4046-aa36-4dbcddd70997_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_1p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_1p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_1p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_1p,
ee63836e-bf83-4000-9818-cbfd840f9c15_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
4ea6cb93-8d35-4320-a530-17146f8ccab6_1p,
f7128dd5-85bc-41ab-8c57-60d7f65ac167_1p,
a581206a-d228-4993-adad-bec906483c87_1p,
9de80282-8dcf-40e8-bfbe-2fc76001a2fc_1p,
3db91538-26cf-48aa-b012-bdc01d802ad3_1p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_1p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_1p,
6b829494-be03-4ed0-9085-0f19cf3a971a_1p,
620c4643-8b73-436e-8c99-b944bbba4d42_1p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_1p,
4fc367cf-2522-460c-9140-49e227554670_1p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_1p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_1p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
prefetch cache
A <link rel='prefetch'...> suggests to browsers they should fetch a resource ahead of time and cache it. But if browsers don't partition this cache, it can be used to track users across websites. |
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
script cache
Caching of scripts in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
XMLHttpRequest cache
Similar to the newer Fetch API, any resource received may be cached by the browser. The cache is potentially vulnerable to cross-site tracking attack. |
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
Cross-session third-party tracking testsWhich browsers prevent third-party trackers from tracking you across browser sessions?
A common vulnerability of web browsers is that they allow third-party trackers to 'tag' your browser with some tracking data. This tag can be used to re-identify you when you return to a website you visited before. This category of leaks can be prevented by browser if they clean or isolate data between browser sessions. (In cases where a user has logged into a website or entered detailed information, it may be justifiable for a browser to retain information across sessions. These tests check when no such justification exists: when you have entered no significant information into a website, will the browser still retain data that allows you to be tracked across sessions?) |
||||||||||||
|
Alt-Svc
Alt-Svc allows the server to indicate to the web browser that a resource should be loaded on a different server. Because this is a persistent setting, it could be used to track users across websites if it is not correctly partitioned. |
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h2, h2, h2, h2, h2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h2, h2, h2, h2, h2
result, different session: h2, h2, h2, h2, h2
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3
result, different session: h3, h3, h3, h3
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async () => {
// Clear Alt-Svc caching first.
let responseText = '';
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/clear');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after clear:', responseText);
// Store "h3" state in Alt-Svc cache
for (let i = 0; i < 3; ++i) {
await fetch(altSvcOrigin + '/set');
await sleepMs(100);
}
responseText = await fetchText(altSvcOrigin + '/protocol');
console.log('after set:', responseText);
}
read: async () => {
const protocol = await fetchText(altSvcOrigin + '/protocol');
if ((new URL(window.location)).searchParams.get('thirdparty') === 'same') {
if (protocol !== 'h3') {
throw new Error('Unsupported');
}
}
return protocol;
}
result, same session: h3, h3, h3, h3, h3
result, different session: h3, h3, h3, h3, h3
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CacheStorage
The Cache API is a content storage mechanism originally introduced to support ServiceWorkers. If the same Cache object is accessible to multiple websites, it can be abused to track users. |
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_3p,
1d653492-bad6-4f49-9e00-76af7e05ab68_3p,
a761212b-7906-442d-ab3d-e0dd5b37201b_3p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_3p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_3p
result, different session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_3p,
1d653492-bad6-4f49-9e00-76af7e05ab68_3p,
a761212b-7906-442d-ab3d-e0dd5b37201b_3p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_3p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_3p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_3p,
1bae60da-6527-4c42-880c-620299628418_3p,
f2646935-99a5-4364-ae37-a74e0ca093c7_3p,
c879dd15-54f8-45d8-8085-b803a661d5b9_3p
result, different session:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
result, different session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_3p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_3p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_3p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_3p,
ee63836e-bf83-4000-9818-cbfd840f9c15_3p
result, different session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_3p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_3p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_3p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_3p,
ee63836e-bf83-4000-9818-cbfd840f9c15_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
result, different session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
cookie (HTTP)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p_http,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p_http,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p_http,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p_http,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p_http
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p_http,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p_http,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p_http,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p_http,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p_http
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p_http,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p_http,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p_http,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p_http,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p_http,
a701abbd-6353-4d12-8510-f66a8280519d_3p_http,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p_http,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p_http,
16cc67a7-5638-48f1-8173-90e301a4c356_3p_http
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p_http,
a701abbd-6353-4d12-8510-f66a8280519d_3p_http,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p_http,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p_http,
16cc67a7-5638-48f1-8173-90e301a4c356_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p_http,
66355194-6850-41aa-84f1-8978a8d95e61_3p_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p_http
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p_http,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p_http,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p_http,
66355194-6850-41aa-84f1-8978a8d95e61_3p_http,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , ,
result, different session: , , ,
unsupported: true, true, true, true
passed: undefined
test failed: false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${baseURI}cookie?secret=${secret}_http`);
}
read: async () => {
// Test if we now send a requests with a 'cookie' header containing the secret.
const response = await fetch(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p_http,
4fc367cf-2522-460c-9140-49e227554670_3p_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p_http
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p_http,
4fc367cf-2522-460c-9140-49e227554670_3p_http,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p_http,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p_http,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
cookie (JS)
The cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them. |
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p_js,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p_js,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p_js,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p_js,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p_js
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p_js,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p_js,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p_js,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p_js,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p_js
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p_js,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p_js,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p_js,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p_js,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p_js,
a701abbd-6353-4d12-8510-f66a8280519d_3p_js,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p_js,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p_js,
16cc67a7-5638-48f1-8173-90e301a4c356_3p_js
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p_js,
a701abbd-6353-4d12-8510-f66a8280519d_3p_js,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p_js,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p_js,
16cc67a7-5638-48f1-8173-90e301a4c356_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p_js,
66355194-6850-41aa-84f1-8978a8d95e61_3p_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p_js
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p_js,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p_js,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p_js,
66355194-6850-41aa-84f1-8978a8d95e61_3p_js,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , ,
result, different session: , , ,
unsupported: true, true, true, true
passed: undefined
test failed: false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p_js,
4fc367cf-2522-460c-9140-49e227554670_3p_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p_js
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p_js,
4fc367cf-2522-460c-9140-49e227554670_3p_js,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p_js,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p_js,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CookieStore
The Cookie Store API is an alternative asynchronous API for managing cookies, supported by some browsers. |
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session: , , ,
result, different session: , , ,
unsupported: true, true, true, true
passed: undefined
test failed: false, false, false, false
|
write: (data) => {
const msPerHour = 60 * 60 * 1000;
if (!window.cookieStore) {
throw new Error('Unsupported');
}
window.cookieStore.set({
name: 'partition_test',
value: data,
expires: Date.now() + msPerHour,
sameSite: 'none'
});
}
read: async () => {
if (!window.cookieStore) {
throw new Error('Unsupported');
}
const cookie = await window.cookieStore.get('partition_test');
if (!cookie) {
return null;
}
return cookie.value;
}
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
CSS cache
CSS stylesheets are cached, and if that cache is shared between websites, it can be used to track users across sites. |
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_2054674084370378,
fake_8274286534461677,
fake_5969695996864814,
fake_327812707942996,
fake_18700833783630322
result, different session:
fake_2054674084370378,
fake_8274286534461677,
fake_5969695996864814,
fake_327812707942996,
fake_18700833783630322
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_37806452153327297,
fake_2852432144126791,
fake_8708630002655662,
fake_4463070881974269,
fake_2770019121079714
result, different session:
fake_37806452153327297,
fake_2852432144126791,
fake_8708630002655662,
fake_4463070881974269,
fake_2770019121079714
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_7905256938847613,
fake_822166442963306,
fake_6394872545280923,
fake_4418262006762874,
fake_8830708583484732
result, different session:
fake_7905256938847613,
fake_822166442963306,
fake_6394872545280923,
fake_4418262006762874,
fake_8830708583484732
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_9371880089799738,
fake_28972166080179096,
fake_9821312768051926,
fake_2814820572311092,
fake_897341530231258
result, different session:
fake_9371880089799738,
fake_28972166080179096,
fake_9821312768051926,
fake_2814820572311092,
fake_897341530231258
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_5161066331251833,
fake_8273599610286819,
fake_8115212996694978,
fake_0805465905658902,
fake_2972167626318134
result, different session:
fake_5161066331251833,
fake_8273599610286819,
fake_8115212996694978,
fake_0805465905658902,
fake_2972167626318134
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_48905851033074477,
fake_4400548806061457,
fake_6756016159191927,
fake_16383277556581177,
fake_7004187010326361
result, different session:
fake_020248318675755828,
fake_9622575777231639,
fake_8455354917005897,
fake_6166306329347777,
fake_5293388944703528
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_9664634298157333,
fake_7613885106131184,
fake_5675515121441668,
fake_3849285638017612,
fake_48980123807025056
result, different session:
fake_673564310964101,
fake_5802763687753891,
fake_21191713509378096,
fake_0421146644846051,
fake_4725748035287112
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_470136629104116,
fake_8262625153652117,
fake_056076082999795274,
fake_15653916219791353,
fake_4562741225171052
result, different session:
fake_470136629104116,
fake_8262625153652117,
fake_056076082999795274,
fake_15653916219791353,
fake_4562741225171052
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_8164585875888486,
fake_2640756824820878,
fake_7405117307718212,
fake_3818735494960379,
fake_36187493877518384
result, different session:
fake_8164585875888486,
fake_2640756824820878,
fake_7405117307718212,
fake_3818735494960379,
fake_36187493877518384
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_41771573076740287,
fake_9362996428619386,
fake_29865895339169723,
fake_5240348475351286,
fake_1742205903484264
result, different session:
fake_37464470657018967,
fake_25128845451433457,
fake_16725784787251552,
fake_0630836164912334,
fake_35282384458660987
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_7697119254370381,
fake_28661250893725065,
fake_8634180848961959,
fake_49607315585283374
result, different session:
fake_7697119254370381,
fake_28661250893725065,
fake_8634180848961959,
fake_49607315585283374
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return key;
}
read: async (key) => {
const href = testURI('resource', 'css', key);
const head = document.getElementsByTagName('head')[0];
head.innerHTML += `<link type="text/css" rel="stylesheet" href="${href}">`;
const testElement = document.querySelector('#css');
let fontFamily;
while (true) {
await sleepMs(100);
fontFamily = window.getComputedStyle(testElement).fontFamily;
if (fontFamily.startsWith('fake')) {
break;
}
}
console.log(fontFamily);
return fontFamily;
}
result, same session:
fake_9288700349682473,
fake_7918577757489669,
fake_3253172422868882,
fake_11546189736297885,
fake_22096095931048843
result, different session:
fake_9288700349682473,
fake_7918577757489669,
fake_3253172422868882,
fake_11546189736297885,
fake_22096095931048843
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
favicon cache
A favicon is an icon that represents a website, typically shown in browser tab and bookmarks menu. If the favicon cache is not partitioned, it can be used to track users across websites. |
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => key
read: async (key) => {
// Wait for the favicon to load (defined in supercookies.html)
await sleepMs(2000);
const response = await fetch(
testURI('ctr', 'favicon', key), { cache: 'reload' });
const count = (await response.text()).trim();
if (count === '0') {
throw new Error('No requests received');
}
return count;
}
result, same session: 2, 2, 2, 2, 2
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
fetch cache
When a resource is received via the Fetch API, it is frequently cached. That cache can potentially be abused for cross-site tracking. |
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
return key;
}
read: async (key) => {
await fetch(testURI('resource', 'fetch', key),
{ cache: 'force-cache' });
const countResponse = await fetch(testURI('ctr', 'fetch', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
font cache
Web fonts are sometimes stored in their own cache, which is vulnerable to being abused for cross-site tracking. |
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
return key;
}
read: async (key) => {
const text = document.createElement('span');
text.id = 'text';
text.innerText = 'test';
document.body.appendChild(text);
const originalWidth = text.getBoundingClientRect().width;
const style = document.createElement('style');
style.type = 'text/css';
const fontURI = testURI('resource', 'font', key);
style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } #text { font-family: "myFont" }`;
document.getElementsByTagName('head')[0].appendChild(style);
let newWidth;
do {
await sleepMs(100);
newWidth = text.getBoundingClientRect().width;
} while (newWidth < 0 || newWidth === originalWidth);
const response = await fetch(
testURI('ctr', 'font', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
iframe cache
An iframe is an element in a web page than allows websites to embed a second web page. Caching of this web page could be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
iframe.addEventListener('load', () => resolve(key), { once: true });
iframe.src = testURI('resource', 'page', key);
})
read: async (key) => {
const iframe = document.createElement('iframe');
document.body.appendChild(iframe);
const iframeLoadPromise = new Promise((resolve, reject) => {
iframe.addEventListener('load', resolve, { once: true });
});
const address = testURI('resource', 'page', key);
iframe.src = address;
await iframeLoadPromise;
const response = await fetch(
testURI('ctr', 'page', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
image cache
Caching of images in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const img = document.createElement('img');
document.body.appendChild(img);
img.addEventListener('load', () => resolve(key), { once: true });
img.src = testURI('resource', 'image', key);
})
read: async (key) => {
const img = document.createElement('img');
document.body.appendChild(img);
const imgLoadPromise = new Promise((resolve, reject) => {
img.addEventListener('load', resolve, { once: true });
});
img.src = testURI('resource', 'image', key);
await imgLoadPromise;
const response = await fetch(
testURI('ctr', 'image', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
indexedDB
The IndexedDB API exposes a transactional database to web pages. That database can be used to track users across websites, unless it is partitioned. |
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_3p,
1d653492-bad6-4f49-9e00-76af7e05ab68_3p,
a761212b-7906-442d-ab3d-e0dd5b37201b_3p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_3p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_3p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_3p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_3p,
1bae60da-6527-4c42-880c-620299628418_3p,
f2646935-99a5-4364-ae37-a74e0ca093c7_3p,
c879dd15-54f8-45d8-8085-b803a661d5b9_3p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
result, different session:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_3p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_3p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_3p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_3p,
ee63836e-bf83-4000-9818-cbfd840f9c15_3p
result, different session: undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
result, different session:
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure,
Error: IDBFactory.open: The operation is insecure
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (secret) => {
try {
return await IdbKeyVal.set('secret', secret);
} catch (e) {
throw new Error('Unsupported');
}
}
read: () => IdbKeyVal.get('secret')
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
localStorage
The localStorage API gives websites access to a key-value database that will remain available across visits. If the localStorage API is not partitioned or blocked, it can also be used to track users across websites. |
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
result, different session:
cb504da5-0aaf-4f24-b320-7ec995969926_3p,
7886bfd9-0009-4511-b07f-cc6c43bfe47f_3p,
ba92590b-8faa-41c0-b17d-5c1e35deb58c_3p,
d8cb64ac-44ba-4829-a5e0-94c751c1d9da_3p,
1f6bc3ee-2b3b-4fc9-9940-81a6a89533b4_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
result, different session:
ed8f0590-e0e7-47b5-8b5b-158617bea66c_3p,
cff4f3bd-8da4-4b6d-9512-9b0fb9701478_3p,
05c63e9e-e4d5-453d-8fa3-3e3c2cd7e05d_3p,
ffc5ccfa-c28a-4965-b6cf-bd5090b7ba3a_3p,
8d9d4b96-dcb2-4536-a5d4-40607c07f1b1_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
a4d9b767-c6bf-41b2-a4d1-659b4aeb0ba2_3p,
1d653492-bad6-4f49-9e00-76af7e05ab68_3p,
a761212b-7906-442d-ab3d-e0dd5b37201b_3p,
6e1bb85c-8c9b-4479-a2d6-821f95f33f06_3p,
2aaae9dc-8b53-4a98-ba05-9f1ec4bee33f_3p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
result, different session:
857ab621-1ba4-42b6-af58-67c12c826ffa_3p,
227e30f8-a368-4f8d-9345-feced2cc89ca_3p,
6767bfd1-9e9e-4b0e-af86-de2b0c96e1f6_3p,
c3f57b0f-3625-46ee-9b8e-82bfeffbe3d4_3p,
9792d392-ee18-4783-9a10-79fc448d5ac9_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
result, different session:
2205f167-0359-43cf-8380-c9fbf8fcc347_3p,
a701abbd-6353-4d12-8510-f66a8280519d_3p,
9440437c-dc36-4a87-ab99-e75a16d5e6bd_3p,
d073840c-956c-4dca-86b3-3ba0adedaf5c_3p,
16cc67a7-5638-48f1-8173-90e301a4c356_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
7a64bded-392b-4a86-bc5f-0d7df736fd55_3p,
6a8c8db3-0dfd-4b46-9168-eff296fd0c5b_3p,
1bae60da-6527-4c42-880c-620299628418_3p,
f2646935-99a5-4364-ae37-a74e0ca093c7_3p,
c879dd15-54f8-45d8-8085-b803a661d5b9_3p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
result, different session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
result, different session:
71e92e8d-94e3-457b-8fd1-8331cbe224d7_3p,
725a5a6a-ab70-483c-ad00-c8333e9211ad_3p,
241d464b-d97c-46f1-bdcd-7c323b9a2c02_3p,
66355194-6850-41aa-84f1-8978a8d95e61_3p,
6a86d87c-711d-4046-aa36-4dbcddd70997_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
99fddb5e-06df-4c09-8126-c39a7c4dcad1_3p,
3f2adab2-c752-4730-9a78-0f4e5cc21dbb_3p,
b212bbc6-0314-4f7b-bc45-e2a7fb9e39ff_3p,
5ddecfab-3e5e-471d-a7ba-9a944259b66c_3p,
ee63836e-bf83-4000-9818-cbfd840f9c15_3p
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
result, different session:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
result, different session:
c7435ce9-d27a-4ac7-8776-b9077a74ac87_3p,
b253b7fa-9a85-479b-80b4-98e7a3043ec4_3p,
6b829494-be03-4ed0-9085-0f19cf3a971a_3p,
620c4643-8b73-436e-8c99-b944bbba4d42_3p
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (secret) => { window.localStorage.setItem('secret', secret); }
read: () => window.localStorage.getItem('secret')
result, same session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
result, different session:
0c2d7904-6d65-4e1d-862b-1c181b86c8f6_3p,
4fc367cf-2522-460c-9140-49e227554670_3p,
107d3fad-f9a8-4da8-b7f1-7034e0707064_3p,
3c7a7d4d-4100-4006-b848-bace0f76ea82_3p,
9a6f6fb3-8594-46f0-84c7-05e6e2d85491_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
prefetch cache
A <link rel='prefetch'...> suggests to browsers they should fetch a resource ahead of time and cache it. But if browsers don't partition this cache, it can be used to track users across websites. |
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
result, different session:
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received,
Error: No requests received
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
return key;
}
read: async (key) => {
const link = document.createElement('link');
link.rel = 'prefetch';
link.href = testURI('resource', 'prefetch', key);
document.getElementsByTagName('head')[0].appendChild(link);
await sleepMs(500);
const response = await fetch(
testURI('ctr', 'prefetch', key), { cache: 'reload' });
const countString = (await response.text()).trim();
if (parseInt(countString) === 0) {
throw new Error('No requests received');
}
return countString;
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
script cache
Caching of scripts in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking. |
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: (key) => new Promise((resolve, reject) => {
const script = document.createElement('script');
document.body.appendChild(script);
script.addEventListener('load', () => resolve(key), { once: true });
script.src = testURI('resource', 'script', key);
})
read: async (key) => {
const script = document.createElement('script');
document.body.appendChild(script);
const scriptLoadPromise = new Promise((resolve, reject) => {
script.addEventListener('load', resolve, { once: true });
});
script.src = testURI('resource', 'script', key);
await scriptLoadPromise;
const response = await fetch(
testURI('ctr', 'script', key), { cache: 'reload' });
return (await response.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
XMLHttpRequest cache
Similar to the newer Fetch API, any resource received may be cached by the browser. The cache is potentially vulnerable to cross-site tracking attack. |
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 2, 2, 2, 2, 2
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1
result, different session: 1, 1, 1, 1
unsupported: false, false, false, false
passed: false, false, false, false
test failed: false, false, false, false
|
write: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
return key;
}
read: async (key) => {
const req = new window.XMLHttpRequest();
const loadPromise = new Promise(resolve => req.addEventListener('load', resolve));
req.open('GET', testURI('resource', 'xhr', key));
req.send();
await loadPromise;
const countResponse = await fetch(testURI('ctr', 'xhr', key),
{ cache: 'reload' });
return (await countResponse.text()).trim();
}
result, same session: 1, 1, 1, 1, 1
result, different session: 1, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
|
DNS privacy testsWhich browsers keep their DNS queries encrypted?
The Domain Name System (DNS) is the method by which web browsers look up the IP address for each website you visit. In a DNS query, a web browser will ask a DNS resolver (somewhere on the internet) for the IP address corresponding to a domain name (such as nytimes.com) for a website you want to visit. Traditionally, most web browsers have sent their DNS queries unencrypted, which means your ISP or anyone else on the network between your computer and the DNS resolver can eavesdrop on the websites you visit. In recent years, web browsers and operating systems have begun to introduce encrypted DNS, including the DNS over HTTPS (DoH) protocol, to encrypt the DNS request from your browser and the response from the resolver to keep your browsing history from leaking. These tests check whether a browser is still protecting its DNS requests by sending them encrypted. |
||||||||||||
|
Location: Brazil
Checks whether the browser decides to use encrypted DNS if the computer is located in Brazil. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: China
Checks whether the browser decides to use encrypted DNS if the computer is located in China. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: Germany
Checks whether the browser decides to use encrypted DNS if the computer is located in Germany. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: India
Checks whether the browser decides to use encrypted DNS if the computer is located in India. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: Nigeria
Checks whether the browser decides to use encrypted DNS if the computer is located in Nigeria. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: Russia
Checks whether the browser decides to use encrypted DNS if the computer is located in Russia. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
Location: United States
Checks whether the browser decides to use encrypted DNS if the computer is located in United States. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
OS DNS: Cloudflare
Checks whether the browser decides to use encrypted DNS if the operating system's default DNS provider is Cloudflare. |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
|
OS DNS: Comodo
Checks whether the browser decides to use encrypted DNS if the operating system's default DNS provider is Comodo. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
|
OS DNS: Google
Checks whether the browser decides to use encrypted DNS if the operating system's default DNS provider is Google. |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
|
OS DNS: Quad9
Checks whether the browser decides to use encrypted DNS if the operating system's default DNS provider is Quad9. |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false, false leak detected: true, true, true, true, true |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: true, true, true, true, true leak detected: false, false, false, false, false |
passed: false, false, false, false leak detected: true, true, true, true |
passed: false, false, false, false, false leak detected: true, true, true, true, true |