Desktop Browsers(default settings) |
brave 1.96 |
chrome 155.0 |
duckduckgo 1.210 |
edge 154.0 |
firefox 157.0 |
librewolf 155.0 |
mullvad 15.0 |
opera 136.0 |
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, 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
result, different first party: h2, h2, h2
unsupported: false, false, false
passed: true, true, true
test failed: 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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
result, different first party:
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
result, different first party:
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.,
Error: NetworkError when attempting to fetch resource.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
result, different first party:
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed,
Error: Load failed
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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=${secret}`);
const result = await response.json();
const blobUrl = decodeURIComponent(result.blobUrl);
const blobResponse = await fetch(blobUrl);
return blobResponse.text();
}
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
try {
const blobURL = URL.createObjectURL(new Blob([secret]));
fetch(`${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party:
Error: Failed to fetch,
Error: Failed to fetch,
Error: Failed to fetch
unsupported: false, false, false
passed: true, true, true
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party:
Error: no BroadcastChannel message,
Error: no BroadcastChannel message,
Error: no BroadcastChannel message
unsupported: false, false, false
passed: true, true, true
test failed: 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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
result, different first party:
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
result, different first party:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
result, different first party:
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.,
Error: The operation is insecure.
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
result, different first party:
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url'),
Error: undefined is not an object (evaluating 'cacheKeys[0].url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
result, different first party:
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url'),
Error: Cannot read properties of undefined (reading 'url')
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
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')
unsupported: false, false, false
passed: true, true, true
test failed: 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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b_http,
8aacd9a5-6905-409b-bee6-f2472870053b_http,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_http,
8808e936-944c-4db8-9948-eb25a3075ce8_http,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_http
result, different first party:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_http,
ef952293-28df-4d60-b81d-afeefc47b24a_http,
0d43cc24-38c3-4bff-803c-218eea881108_http,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_http,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_http,
705d573e-9142-4020-b079-9f26ba193bb7_http
result, different first party:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_http,
705d573e-9142-4020-b079-9f26ba193bb7_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_http,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_http,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_http,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_http,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_http,
fd223efd-d982-4205-8991-4c174b3b611c_http,
134d5c32-f35f-4a19-84f7-be9c498588ac_http,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_http,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944_http,
b4872b5e-5d54-4e8d-8521-0713745bc320_http,
8d0a427f-2dea-4963-b16b-037b6c2559a0_http,
e47ccec0-ee13-4591-b0f2-850a3591a988_http,
23dbf696-b511-4af0-8215-a5b0dc5adeee_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_http
result, different first party:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c_http,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_http,
5ada1510-79c9-4933-a88d-96862c2f58c6_http,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_http,
e45606be-04fe-4d17-86d5-a40cb10fc414_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
2544c491-6194-41fd-b05f-1ec5d7617509_http,
7e584888-0675-4bcc-8d9a-890854e93536_http,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_http,
e63829c0-bd50-4895-8a11-5f12cc8f127e_http,
d1761652-6401-43cb-bb24-e38dad8ccedd_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_http,
29f9987d-bb12-42ae-8967-d096bf95a900_http,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_http,
c993758b-67cd-49d8-8136-1589ef721f2a_http,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_http
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_http,
ed886100-2b92-47d5-9a9a-892116dc580d_http
result, different first party:
17bb724b-daa0-4ab5-932a-e40544ef27bc_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_http,
ed886100-2b92-47d5-9a9a-892116dc580d_http
unsupported: false, false, false
passed: false, false, false
test failed: 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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b_js,
8aacd9a5-6905-409b-bee6-f2472870053b_js,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_js,
8808e936-944c-4db8-9948-eb25a3075ce8_js,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_js
result, different first party:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_js,
ef952293-28df-4d60-b81d-afeefc47b24a_js,
0d43cc24-38c3-4bff-803c-218eea881108_js,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_js,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_js,
705d573e-9142-4020-b079-9f26ba193bb7_js
result, different first party:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_js,
705d573e-9142-4020-b079-9f26ba193bb7_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_js,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_js,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_js,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_js,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_js,
fd223efd-d982-4205-8991-4c174b3b611c_js,
134d5c32-f35f-4a19-84f7-be9c498588ac_js,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_js,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944_js,
b4872b5e-5d54-4e8d-8521-0713745bc320_js,
8d0a427f-2dea-4963-b16b-037b6c2559a0_js,
e47ccec0-ee13-4591-b0f2-850a3591a988_js,
23dbf696-b511-4af0-8215-a5b0dc5adeee_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_js
result, different first party:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c_js,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_js,
5ada1510-79c9-4933-a88d-96862c2f58c6_js,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_js,
e45606be-04fe-4d17-86d5-a40cb10fc414_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
2544c491-6194-41fd-b05f-1ec5d7617509_js,
7e584888-0675-4bcc-8d9a-890854e93536_js,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_js,
e63829c0-bd50-4895-8a11-5f12cc8f127e_js,
d1761652-6401-43cb-bb24-e38dad8ccedd_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_js,
29f9987d-bb12-42ae-8967-d096bf95a900_js,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_js,
c993758b-67cd-49d8-8136-1589ef721f2a_js,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_js
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same first party:
17bb724b-daa0-4ab5-932a-e40544ef27bc_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_js,
ed886100-2b92-47d5-9a9a-892116dc580d_js
result, different first party:
17bb724b-daa0-4ab5-932a-e40544ef27bc_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_js,
ed886100-2b92-47d5-9a9a-892116dc580d_js
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
result, different first party:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
result, different first party:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
result, different first party:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
unsupported: false, false, false
passed: false, false, false
test failed: 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_7523634783352275,
fake_629541743442823,
fake_052117377364223616,
fake_6934365700516505,
fake_15108602259643034
result, different first party:
fake_5669834196033263,
fake_9487620767623881,
fake_5268399204722507,
fake_6405041325629779,
fake_1351480026055587
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_31849104847216214,
fake_05035114672390728,
fake_7877816047652739,
fake_234203121473622,
fake_24080525119935214
result, different first party:
fake_08080572107337258,
fake_05035114672390728,
fake_7877816047652739,
fake_234203121473622,
fake_24080525119935214
unsupported: false, false, false, false, false
passed: true, 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_44797360279650267,
fake_14726397826418958,
fake_6922849750254021,
fake_0617579633626284,
fake_3408715229412509
result, different first party:
fake_1251616496571819,
fake_7578651092576534,
fake_5584153250420929,
fake_6431595742643321,
fake_18336555698380308
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_9279484888947276,
fake_5521959447923235,
fake_6089682722374306,
fake_9687639989070893,
fake_6722801397844553
result, different first party:
fake_9279484888947276,
fake_4868117873457769,
fake_6089682722374306,
fake_9687639989070893,
fake_35408162769638696
unsupported: false, false, false, false, false
passed: false, true, false, false, 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_02176841312887734,
fake_1931061256701887,
fake_34590296851514535,
fake_37075204740407086,
fake_013906282464670072
result, different first party:
fake_5792798338252847,
fake_682463480850731,
fake_01027665284395951,
fake_911140759267262,
fake_2980090449678323
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_3751602964458758,
fake_04925930616300933,
fake_2192397167067186,
fake_9598880601515682,
fake_7536776145620601
result, different first party:
fake_6902370241931315,
fake_7991743175104391,
fake_43644198797319445,
fake_28055371372125326,
fake_6218531892582062
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_08675218308025534,
fake_1915844583968478,
fake_992642689125097,
fake_0512435079114848,
fake_5389626461695274
result, different first party:
fake_6080283135757303,
fake_4233623692472783,
fake_31991312978299513,
fake_863013236158521,
fake_4677393619132546
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_1070934145443545,
fake_7700326975100409,
fake_9971391699720382,
fake_7294243842937607,
fake_7083247596794293
result, different first party:
fake_1070934145443545,
fake_7700326975100409,
fake_8693916400587411,
fake_7294243842937607,
fake_7739795648622172
unsupported: false, false, false, false, false
passed: false, false, true, false, 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_14094298611073608,
fake_3103594739091242,
fake_3634416321027625,
fake_08761248771758723,
fake_4282902509990292
result, different first party:
fake_5756884002246527,
fake_2902795919890797,
fake_2167196294991458,
fake_5279073903218336,
fake_08195612015805698
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_4059751291523175,
fake_643368687576032,
fake_6455511618495993,
fake_6428041355600294,
fake_5221593385566587
result, different first party:
fake_43149574359482235,
fake_039051975194990485,
fake_6383835344220334,
fake_9438758636464064,
fake_9037763786775532
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_8333442227704013,
fake_8910885399702222,
fake_9226159712904729,
fake_10711087753573367,
fake_1779078636656417
result, different first party:
fake_8333442227704013,
fake_8910885399702222,
fake_9226159712904729,
fake_10711087753573367,
fake_1779078636656417
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_8494956301265701,
fake_47402401353176815,
fake_4207500595769531
result, different first party:
fake_8494956301265701,
fake_47402401353176815,
fake_4207500595769531
unsupported: false, false, false
passed: false, false, false
test failed: 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, 2, 1, 1
result, different first party: 1, 1, 2, 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, 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: 2, 2, 2
result, different first party: 3, 3, 3
unsupported: false, false, false
passed: true, true, true
test failed: 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, 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
result, different first party: 2, 2, 2
unsupported: false, false, false
passed: true, true, true
test failed: 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: 2, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: true, 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: 1, 2, 1, 1, 2
unsupported: false, false, false, false, false
passed: false, true, false, false, 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: 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, 2, 1, 2
unsupported: false, false, false, false, false
passed: false, false, true, false, 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
result, different first party: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
unsupported: false, false, false
passed: true, true, true
test failed: 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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h1.privacytests2.org:8901/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h1.privacytests2.org:8901/?mode=write&secret=${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: , ,
unsupported: false, false, false
passed: true, true, true
test failed: 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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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=${secret}`, { cache: 'no-store' });
}
read: async () => {
const response = await fetch('https://h2.privacytests2.org:8902/?mode=read', { cache: 'no-store' });
return await response.text();
}
result, same first party:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
result, different first party: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
await fetch(`https://h2.privacytests2.org:8902/?mode=write&secret=${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: , ,
unsupported: false, false, false
passed: true, true, true
test failed: 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:
06226e32b758c800006fe3275620b460,
38049108ee2d8280aa7481e3b135af71,
b45a5e9641d211918e7ef81b91f661c9,
44bc08e3bea0662f7be8cd45c05fda46,
8261163647aaf38ec9060d8c8807f672
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:
ca1b812d54be3db02e54bdada774ac9b,
83ef6fb56b1ddea3ded54b7b84929731,
8f3c5c9ee59ada934d0fdee6060035c3,
e4e47d847855de9cc47c19ad5ca41b9b,
8ce4de914e28d9921ebb444347eaed33
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:
0aaa2b65e130fffdd6b51be288690cbe,
7db184019b806c254ae3109caf726a96,
dee7a5e6449042f367e7a3050d09c997,
d28fc2783f7b3b0661584661df602e49,
4848065b7c4b59aed891ba18654d7b4c
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:
4990aee72df0468d2fdcb0d2f2d14b1e,
4cc887356da26ea405509f6afe8c6814,
6094e4a37ad45cc631d1417987a43dd6,
538d299a9c61954bf2da4d21b78a4eb8,
d94511fdb8ebf1a3b16b106ae3b5e234
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:
2a31541144fed99c46245925bf2172af,
830b592960b1c087fe8b316482c03731,
9de5360acb0108786010e855fa790bdc,
24932674219e2ce1224183c0f38dfad6,
655737e20e3d7e9a16fea54999ddb410
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:
90cd711d14aa4a0487fe1d7dc6ced45f,
60fac5b555be7393d395505712f39aec,
59f04a6828f2510274210d2a34f955ec,
2ab5fb2ab8507a702243cbe06896fa0a,
a92986f7190299fd387b6f3ce13e02c1
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:
f90399ed086a1c7dcf4bba46b75cceba,
7633f5b5e1947b952b25d32c961b12d8,
f21b62eca806f7d9bd422c80b9c2ed69,
4b3e999ed8857a936d18022ccf09c1bf,
d29d3950b0952762eaef814815723e9f
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:
2cb18eddb35b57f835a04c664069737f,
4ba4ca0cdeb75a4a00aeb5eafee45adb,
8456d46639bd94807e2b5d2fffe6ff07,
8ff3dc1cb5ac7169712ef673a66bf5c6,
85c12fe355d588f398f95edcbc8b3519
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:
eaf730d5c98766c38b63f40cc81d74f5,
24929c8ece4c9c2a1318504700e6e578,
6cd4968e10557a96149511775f02e446
result, different first party: , ,
unsupported: false, false, false
passed: true, true, true
test failed: 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: 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: 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, 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 result, different first party: Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false passed: false, false, false test failed: 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: 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: 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, 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 result, different first party: Upgraded to https, Upgraded to https, Upgraded to https unsupported: false, false, false passed: false, false, false test failed: 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, 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
result, different first party: 2, 2, 2
unsupported: false, false, false
passed: true, true, true
test failed: 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: 2, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: true, 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: 1, 2, 1, 1, 2
unsupported: false, false, false, false, false
passed: false, true, false, false, 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: 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, 2, 1, 2
unsupported: false, false, false, false, false
passed: false, false, true, false, 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
result, different first party: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: undefined
unsupported: false, false, false
passed: true, true, true
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: , ,
unsupported: false, false, false
passed: true, true, true
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
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')
unsupported: false, false, false
passed: true, true, true
test failed: 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: 2, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: true, 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: 1, 1, 1, 1, 1
result, different first party: 1, 2, 1, 1, 2
unsupported: false, false, false, false, false
passed: false, true, false, false, 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: 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, 2, 1, 2
unsupported: false, false, false, false, false
passed: false, false, true, false, 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: 1, 1, 1
result, different first party: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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: 2, 1, 1, 1, 1
unsupported: false, false, false, false, false
passed: true, 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: 1, 2, 1, 1, 2
unsupported: false, false, false, false, false
passed: false, true, false, false, 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: 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, 2, 1, 2
unsupported: false, false, false, false, false
passed: false, false, true, false, 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
result, different first party: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: none, none, none
unsupported: false, false, false
passed: true, true, true
test failed: 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:
3c85dfbde27cd92d70ee8928fd38d33337f94fe416db729f9cb8cab6510a6fe4,
8f164fe839a7fcdcbfac5b88c47885b1574ab17034d3cd798b8339bd3a682de5,
ead243b7b2be997daf7a8af804966a9e927adef368aed872a4d887ba7c9de399,
1ad59dea43c225ed92b3f04a9a0da848aea24362b2dbc0bf368294a9dbe8ad99,
331eb95d972267b843e29607727988a6a07289a2357f3f5c4ee8ddb2723a1dae
result, different first party:
73c2ff1756a29cf75618a67f66d2b2bcb0346de2c735397a4bfd531c5f69d501,
085ea7ce86f80d607c60572fdb9ddbfd854d30ec626d621154830a4555a625d3,
7ccac45d43b019906531406acd45f04a2e3365a1b0aa0b748fb9178aea091d57,
bce00c01231b3cf2ace3bb09dc0568b6700e27b1fca39e56d7f8362d3c5baf76,
9580637adbdccb7c1e235a58844541c78a1f334c6aaf03aebe4d5772cf6c9780
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:
fabe43e61c886e7d0893025e07789fb679127a3f03b3435116d7cfe25bb17ef3,
67c385f7f06e4d10007b1a5b5d2fadd1fa1c91c9bc53c5546dbbb422601f6326,
d61e43c56dfa40b110787d551f2d80c4995fb9745574eb5ef3bcdd83859957c3,
160e3e46be13bd176214dd8e6b13029a3a344cf9a1e287f24135e3dc0173c23f,
24812d783039d59d8e8fe81093d5720937cfd58b0b1aa15ffc366493fc75afd6
result, different first party:
b111d7d881c4c253ffb9d71682bf915c0a5bc07d7711a035f74ab2dd7e81ca1b,
7bbbe332a188ebb0b106aad89d81e92593946a937b1bb05887b66ce35bc9b2f2,
ef45d6af5225199ab319dc36c817a6f1988f3bbda5c91c89355b7403da180f67,
b0057c5a951a92996a5738b0063891194355074fe6d0d36a83fa38e0ab616f92,
a9c28e035e2c1697132c3070a506ae01691f878c12bc008f6029bb66320deb09
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:
dc7faff48c10094d932650a0bd9261594842dbcaf9bc760c28581d6d0cd8548e,
624c9a480b78534d166b02e53a265fe5a2c6a57b5a2429f6e433fd56505ad0e3,
d8af684dfd214a44dd9ee59094f4ff31c24d7d1b73e29d68ba2ea81e5c319c4f,
a51976cd8bbea75b67fd89a95c44ed0a3c543ab89f2bc098b018d41642bbaffb,
3cd6679ae5ea648d44a2f61f223a260728c18e321f35930a516e336e0c897d5e
result, different first party:
9118d53dbfbde71c7d437021a2331801f9c603023f67e2b173eb5bafbaabf176,
439f10b317ed757e24e6b2b0627a836395678d7d0948409568691334ea00e672,
b141e8e42a990a02d3210f76c036f9c36b085498eb2c140024f20f4d07db99fc,
0fc509db6e40fe25e6e49c345e4038ea81bd2ba141d495a61eda963a033a67b7,
df771d216e1f82b441ee44e501ba24346eb925814c72725448d70936a7d140fb
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:
a43b540463374829fec8f0a3c852a24d236a0a6e07b8f3e18ab830477ef70616,
dd07bb89bf11ea6a65dd3ad98ce5d25293a700450986e838e6d6b7e9d2287662,
6946c58ee3c99368256a6350bcca523e21c634dc280ed50e264c8edb2982996d,
645267722c4be37fc67d0f7606e768141979ead2f495949fc2e9ca714459e30e,
81cd6a13459f119e35998484ebb5f7f64d3db91040d56a2630f7a2dff2479e8f
result, different first party:
c589b8170598ad25fe1e91ed69c9ac9e010046a0bf2016f7d17b7582953b7f12,
f5110d6ec752ea01e3e4d6a878180177de564f44c81e24fce788db0e6440fe9f,
c46842b1c7209ad5d22e5ecdeaac77b8072c93064071e6c6f1b09256f777f954,
594d719fca6bf5cb950fc68d112ba409f034b51779ef04b2416e46825025abbb,
d7dac0b30286fb0693f248d8785d9b907ed5ee9f80a21e8037274b28ca14cd21
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:
27328fa23102c0383050a40428e9941fb59c5da71aa60283058ce3a81abcec87,
913af5fc2e921cd12d68f39cb6449bf0da6ab9dbda4ab39a345ff08ed0b7873e,
6fe752748d3144a5f28d316c9819f3cbcbe46be0461b00787b042b8aef6b20d2,
76772098100302050bb0a3d924cee1940ac9b61b7f9a6f32b54884b980d7a8df,
01c823a4611b227fbfae3293243a54ab533d107babb40c63d047491d3ff26ba1
result, different first party:
837dade499a71bb8fe7270e4033bfc5b48ea035e186916e784d3bb475e791b7a,
26c44f86e2279894a6feff747dcfd42cd9e4f4ad8fdddd4e7bbe713c5e7aaecc,
cb45de3e926b9cadd2332349836431e5d0a20134bd0be626602bcc82b69d950d,
11048f34fee286a633a65e4f1ae6783e217321ca6954e84a751aa0db355588e0,
9ffbf561dc0956b7a7f0e3a0c239d004f36803e3501a102d7eddaa4d0785226c
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:
27623f8ab32320c0497271be331e9bd0e03856e0763c456a3e43914457861d2f,
a922514cb0d9e635d0257e0e35ca4fa1dcc4b14099090212302e5b84bde6c7a9,
94c139ddea63ebe7fbaa33e70f4c842bd5cbc7fa523378863361db4e4f6f2076,
e35434da74d7c2e7b81d138564be7a71611dc811ff14f114b4c1fbc5b0ed070d,
698453a34ed5054b897698fef063a69b96d20fd837c4f068dcd116fc53f0f4eb
result, different first party:
ea7169d778ce57ba596bfd0dcae973edbb29c823b4d7f4b59f8011defc0c9a70,
c54a68f7e33cc1eeb5e532c0fbe6dc3adb7f0c9322e0cc07f2ce4d8068033085,
52fed4e670619baf6843f9149f87c17d81e83782e0683217c26992664c392bec,
9b41f7d8748b2f3c17b2d7d6db0f0d494174b3b68602dc4f5420b19510971d19,
36ef3563e9ca93e80047f0aa761cecd768f4bdda241d99f7ec635950d240a3ff
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:
efa394033b094413db49ba620a5e57c619d8bde7386faf5b012d55b5308f247d,
2ebc974f1ae5fdbd98f5cbc483579cb10e2598c0bd2aa0dbbbfd6d57a89679b9,
b728d25bda4b5b40b8452aded71301351c7d64efd8f95746fc6b32965665f998,
50745911590196325a132491c59bb32ab65b05f296fbbe4d84b3d3364692583b,
43d0bfad864ab5d07a3d2a97ade7b83d2aaf04b27c4192afd2436bb8e26aafe2
result, different first party:
61e3307a126789c03fe18a8e5602d83af234614357341921b188ca20a2f78e67,
51603af0927edb396adcf187a00cc72e590f6c827e8fc2053027fa1b033a9b6f,
e6c7fbfa636be83a46b58bc213072710007d9b53cd1d345fa978482916d653ed,
d1708d23cda09e3cf17a9d6d5922fea020e432496268689c04232afc14edf65c,
281f967cff2cff466a1af9cfdea85e85604cfa66af8c03ab9e28070ad547e93f
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:
b35910aed4263fa264739940be3310254539b2e98b8971c3ba4f9089805ab035,
da0e092acf78c83e503afbfe3a84dda9ba7c8f3ddf995fc8d9ebcb77b1dbfa90,
aae6ba37f21766b945fa46636ac8601bbf9595a2cdf73ccb431ce2b0f3505243,
d9059df4ed63a2b40764427858f0f2475f554aa15c038b30d65a37b1d66eeaf7,
b37b1b283cb8f20dc74adfab64bcd5132c96dd2af03455d8a46b79422d3623de
result, different first party:
9899cf42ab92a63e19b6b44e4b60fbf9319642c048c0f66cabc4b23e7bae953e,
98a1b820f3319b82f3060562ef9fba3340ee5fcb6cd8ee7a90aeb6c728bfd472,
8ce69ae4c6fc68f01ac7731346c43fdeb80274c4a783f752e962b22dc13b0f79,
27e1bac40a78870234763f2b97633bc54b46fba12789f57ac00f1cc03a349df2,
6a60b3ce14727491e6e4e0df1393b21b15462a48997942d781d3ae44950a93f4
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:
da20551b300e26d7cc0898ed17989873c5abaee91a5cbd349bedb069e3d2843d,
edf67381fda7a2af710d14a92a2e758a7914e536c50cad2c202f54388e16a30c,
aeb093a43629d01c070be128ce1ef08e8c3b293b3c1ba94b0e6b291edd30c698,
72bf368709dcc542a880a02799dcdecc8f6dd4bc305eb89b5956fd9cd9c6322f,
ab44ac3a5b43ca15d8ac457c4299e2b98e9fd3d90abc4a75b3e98a39c6e555c9
result, different first party:
7963c20e9b68f22712e9b0fe62a20c1bb70755b6da0a44e6974987872bfed3d5,
f406673fdc778bcb97d630e02da81176bc879617bb9d1999a32f51c76346a1ca,
9d9a1207f9338244826e30c9e2751da3a6542645ee6196f9975faf869cd67546,
bfaaa577c22186798e3bfcf7d6cd89d9ff6e9dd6cd0d13de8fd7307c0b307d00,
1abe10c8bfe5b9ea68a39f273fea45d23564af890b3d7d82cea1e798bcc63927
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:
aaa4c21c56ae3b1624a6b3b00778b9e3fa112982e627780a9ad354e6afae1c34,
e016b2dd720f5343b419f2fbff7663c7dedeb8c324e7187fcf24d8d45c309a57,
f6341b068494887a77193383ddd3e2acd0aa50818b8bc91cf3efdba8f3c96098,
5ff68dad822e893e94f6acfebcc3d26b46d023c7dad12f12b24c389ffe7b1c21,
a1c3616a8598c8f086230e1830a20cb82cd285e9daa44a500444391595045955
result, different first party:
07de2b70c26367a96f857d33b314a2bb820f4196c83b174f91c001822f5168d8,
b9dd7b7c7907d071e500c226fb2d86659517f4e1d3a01f2b2a310430fbf4ddd6,
9c519e363d57161493b81b50c01558631e4b921a6a0defda14a56a70dd382af8,
f4276c32e29a8e52e66e14c6ee4d917d00209e06a44c0b04e0a0a5f4613b9276,
0a5be6584eeebd71833ac75bb88be3a2de505d2dfc928c236f268063cca9453b
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:
c7fc93050b9d99b036cbfb3165038d6ef49fd8052433726dc5b2bf6c96440ecc,
4cf69bffbdbd932002bd8aee3eb81c778fca45b4f08040507c31daa0a74b6f2d,
5bededa39a96b6a95a65bd31db4fd4e9ac504d22c02025cc05ba4a566d79a5af,
85781cfb2eb31e8ba52d5cfc28c036c28c27caf427ad46261df8fdd060fdad80,
96e741739b9dd42f36f7bccbb081ccd903951ed3d436bdfdfb05fec7ef9e7f02
result, different first party:
6ca33f19d09881f2129ac1b301fba3b9caa29e285122ee6c8fd61b1006aca6d9,
905e7d682a57829a2cc7e9ab5842db6b91a8e5420a1f64126c03938224b40fe7,
9fe087d999c2fa529c74bf122851ac4d0f9aa9cc98192ce78a1848fa3d325954,
8402f20835478f3f8d52c456645979e0e247770a3bff87af6346381c7d606e09,
287a9fa4881588d7d7c5690a648e98cc55fa80d8f8ae0e21901f68e708280d8a
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:
baa4efcf97a5610fea8fd19210ef5c2a3080aa5c5f7bf9231c802f0a7b42805a,
4ad16951167317bb01eb8b0169e49ab6f321c1bf43d366f94bee4a66122d897e,
5507cfe50773e33acd887a6ecd7b45573618ffb4d172f48a313ff293a6ddad0a
result, different first party:
62da86af85cc1888498d9845342369d37f79c2293decd98bc7d9aecd3bf5ad5d,
c363402e58eac54f955c6590b922802e71d2cc9e7e03fbc190f95abef06deebe,
a65c8ac9a5361a2fa7095e0ed6a7f22da5227e07447c674deec77005a7a14847
unsupported: false, false, false
passed: true, true, true
test failed: 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, 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
result, different first party: 2, 2, 2
unsupported: false, false, false
passed: true, true, true
test failed: 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/,
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/
result, different first party:
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/,
https://test-pages.privacytests2.org/
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b,
8aacd9a5-6905-409b-bee6-f2472870053b,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
8808e936-944c-4db8-9948-eb25a3075ce8,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
dba35e1a-e1c8-4293-8b53-b400f9926b46,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
ef952293-28df-4d60-b81d-afeefc47b24a,
0d43cc24-38c3-4bff-803c-218eea881108,
e86311c6-4d72-4bea-a9ed-dcd7133fe106,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
efc613b9-4698-4142-b24a-4a3d0044a2f5,
705d573e-9142-4020-b079-9f26ba193bb7
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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
18ab6f56-d530-4d12-8cc4-b013f1e6871d,
57081620-7dc5-49d3-b9e2-0b9db3020bdc
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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
fd223efd-d982-4205-8991-4c174b3b611c,
134d5c32-f35f-4a19-84f7-be9c498588ac,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
ffe8fc0e-726a-4322-bf55-717421adcbb9
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:
c92a0cea-5d35-4fb6-82dc-d812dd129944,
b4872b5e-5d54-4e8d-8521-0713745bc320,
8d0a427f-2dea-4963-b16b-037b6c2559a0,
e47ccec0-ee13-4591-b0f2-850a3591a988,
23dbf696-b511-4af0-8215-a5b0dc5adeee
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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
2992f396-a55b-4543-ab70-f3ac6a141f80,
781b10d7-56cc-4051-a901-2ddc95fd02e4,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
1f8d0026-8f14-4d17-b703-807d44ca3805
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:
fdd89f02-8709-4714-b190-1aebb5ae642c,
a0edf926-e1c3-472c-9c1a-2b6c4a078947,
5ada1510-79c9-4933-a88d-96862c2f58c6,
43a2dc03-e334-4d9b-9f84-c1371a8e9040,
e45606be-04fe-4d17-86d5-a40cb10fc414
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:
2544c491-6194-41fd-b05f-1ec5d7617509,
7e584888-0675-4bcc-8d9a-890854e93536,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
e63829c0-bd50-4895-8a11-5f12cc8f127e,
d1761652-6401-43cb-bb24-e38dad8ccedd
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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
29f9987d-bb12-42ae-8967-d096bf95a900,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
c993758b-67cd-49d8-8136-1589ef721f2a,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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:
17bb724b-daa0-4ab5-932a-e40544ef27bc,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party: , ,
unsupported: false, false, false
passed: true, true, true
test failed: 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_505c5d55-535b-411f-8b87-828941eaa81b,
name_8aacd9a5-6905-409b-bee6-f2472870053b,
name_4e7bf136-a2b5-43c6-b44a-0689b1a5850c,
name_8808e936-944c-4db8-9948-eb25a3075ce8,
name_46b2bba4-ca0c-48ca-b040-7d68e5afad2d
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_0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
name_9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
name_dba35e1a-e1c8-4293-8b53-b400f9926b46,
name_2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
name_dcfe49dc-0a80-474f-8be7-e8de025b4cf8
result, different first party:
name_0c86cdc2-a4f7-4383-9eea-a3c59db4dc53,
name_9cc22a7e-5dd6-4762-aaee-db43e2ed3961,
name_dba35e1a-e1c8-4293-8b53-b400f9926b46,
name_2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8,
name_dcfe49dc-0a80-474f-8be7-e8de025b4cf8
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_ee986ab2-44cf-4a4b-82f0-97fadc4f5c20,
name_ef952293-28df-4d60-b81d-afeefc47b24a,
name_0d43cc24-38c3-4bff-803c-218eea881108,
name_e86311c6-4d72-4bea-a9ed-dcd7133fe106,
name_d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8
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_1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
name_7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
name_2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
name_efc613b9-4698-4142-b24a-4a3d0044a2f5,
name_705d573e-9142-4020-b079-9f26ba193bb7
result, different first party:
name_1ca72f30-a18e-4ef3-b05d-6acaf93b7948,
name_7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e,
name_2afc9a71-fa29-4086-bc79-4f4d2d05b2ff,
name_efc613b9-4698-4142-b24a-4a3d0044a2f5,
name_705d573e-9142-4020-b079-9f26ba193bb7
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_82c622bd-dfef-478d-b80b-ae33fb46c4eb,
name_77f25da8-f4cf-4679-bff0-5a7b0616ed5a,
name_b8cb8798-1db6-4fa6-9b41-2ffe754ecef9,
name_18ab6f56-d530-4d12-8cc4-b013f1e6871d,
name_57081620-7dc5-49d3-b9e2-0b9db3020bdc
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_c3babcb4-ddf2-42a3-8d38-8b3bba7dc679,
name_fd223efd-d982-4205-8991-4c174b3b611c,
name_134d5c32-f35f-4a19-84f7-be9c498588ac,
name_d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8,
name_ffe8fc0e-726a-4322-bf55-717421adcbb9
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_c92a0cea-5d35-4fb6-82dc-d812dd129944,
name_b4872b5e-5d54-4e8d-8521-0713745bc320,
name_8d0a427f-2dea-4963-b16b-037b6c2559a0,
name_e47ccec0-ee13-4591-b0f2-850a3591a988,
name_23dbf696-b511-4af0-8215-a5b0dc5adeee
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_7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
name_2992f396-a55b-4543-ab70-f3ac6a141f80,
name_781b10d7-56cc-4051-a901-2ddc95fd02e4,
name_d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
name_1f8d0026-8f14-4d17-b703-807d44ca3805
result, different first party:
name_7d090cea-6dc5-4189-a5b3-ddf840e66e0f,
name_2992f396-a55b-4543-ab70-f3ac6a141f80,
name_781b10d7-56cc-4051-a901-2ddc95fd02e4,
name_d6d78b7e-3781-452c-85a7-7ac1d6171b0d,
name_1f8d0026-8f14-4d17-b703-807d44ca3805
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_fdd89f02-8709-4714-b190-1aebb5ae642c,
name_a0edf926-e1c3-472c-9c1a-2b6c4a078947,
name_5ada1510-79c9-4933-a88d-96862c2f58c6,
name_43a2dc03-e334-4d9b-9f84-c1371a8e9040,
name_e45606be-04fe-4d17-86d5-a40cb10fc414
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_2544c491-6194-41fd-b05f-1ec5d7617509,
name_7e584888-0675-4bcc-8d9a-890854e93536,
name_7ab09ee9-2d25-4f9c-8e7a-7681d843a52f,
name_e63829c0-bd50-4895-8a11-5f12cc8f127e,
name_d1761652-6401-43cb-bb24-e38dad8ccedd
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_12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
name_29f9987d-bb12-42ae-8967-d096bf95a900,
name_a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
name_c993758b-67cd-49d8-8136-1589ef721f2a,
name_fbb24b1d-aa31-4118-a8b1-051dbbe9e910
result, different first party:
name_12451e18-06d5-4f17-bd6f-3a2cb55a35f0,
name_29f9987d-bb12-42ae-8967-d096bf95a900,
name_a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc,
name_c993758b-67cd-49d8-8136-1589ef721f2a,
name_fbb24b1d-aa31-4118-a8b1-051dbbe9e910
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_17bb724b-daa0-4ab5-932a-e40544ef27bc,
name_b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
name_ed886100-2b92-47d5-9a9a-892116dc580d
result, different first party:
name_17bb724b-daa0-4ab5-932a-e40544ef27bc,
name_b5c9b2e0-d10e-49b3-ab53-9e0719ebb486,
name_ed886100-2b92-47d5-9a9a-892116dc580d
unsupported: false, false, false
passed: false, false, false
test failed: 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: 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: 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, false result: Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded, Insecure website loaded |
passed: false, false, false result: 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, true passed: true, true, true, true, true |
upgraded: true, true, true passed: 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, true passed: true, true, true, true, true |
upgraded: true, true, true passed: 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, true result: upgraded, upgraded, upgraded, upgraded, upgraded |
passed: true, true, true result: 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, true result: blocked, blocked, blocked, blocked, blocked |
passed: true, true, true result: 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, false, 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, true |
SNI_status: encrypted passed: 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, false |
header value: undefined passed: 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, false |
passed: 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, false, false |
passed: true, false, true, true, true |
passed: true, false, false, false, true |
passed: false, true, true, false, false |
passed: true, false, false, false, true |
passed: true, false, false, true, true |
passed: true, false, false, true, false |
passed: true, true, true, true, false |
passed: true, true, false, true, true |
passed: true, true, true, true, true |
passed: false, false, true, false, true |
passed: false, true, 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:
2a0b:f4c2:4::96,
2a0e:97c0:3e3:460:1337:b05b:1337:6,
2a0b:f4c2::19,
2a0b:f4c2:2::61,
2620:7:6003::122
readDifferentFirstParty:
2620:7:6003::182,
2a0b:f4c2:4::104,
2a02:ec0:209:10::4,
2001:67c:e60:c0c:192:42:116:46,
2a0f:df00:0:255::205
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, 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
readSameFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
readDifferentFirstParty:
Error: Unsupported,
Error: Unsupported,
Error: Unsupported
testFailed: 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, false passed: false, false, false, false, false |
IsTorExit: false, false, false passed: 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,false |
expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: 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: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
__hssc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
__hstc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
__s
Drip.com email address tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
_hsenc
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
_openstat
Yandex tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
dclid
DoubleClick Click ID (Google) |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
fbclid
Facebook Click Identifier |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
gclid
Google Click Identifier |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
hsCtaTracking
HubSpot tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
mc_eid
Mailchimp Email ID (email recipient's address) |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
mkt_tok
Adobe Marketo tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
ml_subscriber
MailerLite email tracking |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
ml_subscriber_hash
MailerLite email tracking |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
msclkid
Microsoft Click ID |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
oly_anon_id
Omeda marketing 'anonymous' customer id |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
oly_enc_id
Omeda marketing 'known' customer id |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
rb_clickid
Unknown high-entropy tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
s_cid
Adobe Site Catalyst tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
vero_conv
Vero tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
vero_id
Vero tracking parameter |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
wickedid
Wicked Reports e-commerce tracking |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false |
|
yclid
Yandex Click ID |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: false, false, false, false, false |
passed: true, true, true, true, true |
value: 708901172208251 passed: false, false, false, false, false |
value: 708901172208251 passed: 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 |
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 |
url: https://munchkin.marketo.net/munchkin.js passed: , false, false |
url: https://munchkin.marketo.net/munchkin.js |
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 |
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, 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, false |
url: https://dpm.demdex.net/ibs passed: , false, 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, false |
url: https://dpm.demdex.net/ibs passed: false, 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 |
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, false |
url: https://s.amazon-adsystem.com/dcm passed: , false, false |
url: https://s.amazon-adsystem.com/dcm passed: false, false, false, false |
url: https://s.amazon-adsystem.com/dcm passed: false, false, 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, 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 |
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 |
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, false, 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 |
url: https://bat.bing.com/bat.js passed: false, false, false, false |
url: https://bat.bing.com/bat.js passed: , false |
url: https://bat.bing.com/bat.js passed: , false |
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, false |
url: https://static.chartbeat.com/js/chartbeat.js passed: 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 |
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, 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 passed: 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, false, 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: 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 |
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: , false |
|
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 |
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: 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 |
|
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/ |
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/ passed: false |
url: https://www.google.com/pagead/1p-user-list/ passed: , false |
url: https://www.google.com/pagead/1p-user-list/ passed: , false, false |
url: https://www.google.com/pagead/1p-user-list/ passed: false, false, false, false |
url: https://www.google.com/pagead/1p-user-list/ passed: false, 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 passed: false, false |
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, 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 |
url: https://google-analytics.com/urchin.js passed: , false |
url: https://google-analytics.com/urchin.js passed: , 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, 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 |
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 |
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 |
|
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 |
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 |
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, 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 passed: false |
|
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, 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, 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, false |
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, false |
url: https://js-agent.newrelic.com/nr-1212.min.js passed: 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 |
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, 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, false |
url: https://pixel.quantserve.com/pixel passed: false, false, false, false, false |
url: https://pixel.quantserve.com/pixel passed: , false, false |
url: https://pixel.quantserve.com/pixel passed: false |
|
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 |
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 |
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 |
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 |
|
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, false, false |
url: https://t.co/i/adsct passed: true, true, true, true, true |
url: https://t.co/i/adsct passed: false, false |
url: https://t.co/i/adsct passed: false, 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 |
url: https://t.co/i/adsct passed: false, false, false, false, false |
url: https://t.co/i/adsct passed: false, false, false, false |
url: https://t.co/i/adsct passed: 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, false |
url: https://yandex.ru/ads/system/header-bidding.js passed: 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: false, false, true, false, false url: https://munchkin.marketo.net/munchkin.js cookieFound: true, true, false, 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: false, true, true url: https://munchkin.marketo.net/munchkin.js cookieFound: true, 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: false, true, true, false, false url: https://dpm.demdex.net/ibs cookieFound: true, false, false, 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: false, true, true url: https://dpm.demdex.net/ibs cookieFound: true, false, 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: false, false, true, false, false url: https://s.amazon-adsystem.com/dcm cookieFound: true, true, false, 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: false, true, true url: https://s.amazon-adsystem.com/dcm cookieFound: true, false, 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: false, false, true, false, false url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: true, true, false, 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: false, true, true url: https://ib.adnxs.com/px?id=178248&t=1 cookieFound: true, 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: false, false, true, false, false url: https://bat.bing.com/bat.js cookieFound: true, true, false, 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: false, true, true url: https://bat.bing.com/bat.js cookieFound: true, 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: false, true, true, false, false url: https://static.chartbeat.com/js/chartbeat.js cookieFound: true, false, false, 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: false, true, true url: https://static.chartbeat.com/js/chartbeat.js cookieFound: true, 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: false, true, true, false, false url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: true, false, false, 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: false, true, true url: https://dis.criteo.com/dis/rtb/appnexus/cookiematch.aspx cookieFound: true, false, 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: false, false, true, false, false url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: true, true, false, 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: false, true, true url: https://securepubads.g.doubleclick.net/static/glade.js cookieFound: true, false, 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: false, false, true, false, false url: https://connect.facebook.net/en_US/fbevents.js cookieFound: true, true, false, 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: false, true, true url: https://connect.facebook.net/en_US/fbevents.js cookieFound: true, 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: false, false, true, false, false url: https://www.google.com/pagead/1p-user-list/ cookieFound: true, true, false, 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: false, true, true url: https://www.google.com/pagead/1p-user-list/ cookieFound: true, false, 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: false, false, true, false, false url: https://google-analytics.com/urchin.js cookieFound: true, true, false, 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: false, true, true url: https://google-analytics.com/urchin.js cookieFound: true, false, 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: false, false, true, false, false url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: true, true, false, 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: false, true, true url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL cookieFound: true, false, 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: false, true, true, false, false url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: true, false, false, 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: false, true, true url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 cookieFound: true, false, 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: false, false, true, false, false url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: true, true, false, 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: false, true, true url: https://js-agent.newrelic.com/nr-1212.min.js cookieFound: true, 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: false, false, true, false, false url: https://pixel.quantserve.com/pixel cookieFound: true, true, false, 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: false, true, true url: https://pixel.quantserve.com/pixel cookieFound: true, false, 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: false, false, true, false, false url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: true, true, false, 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: false, true, true url: https://sb.scorecardresearch.com/internal-c2/default/cs.js cookieFound: true, 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: false, false, true, true, false url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: true, true, false, false, 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: false, true, true url: https://trc.taboola.com/futureplc-tomsguide/trc/3/json cookieFound: true, 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: false, true, true, false, false url: https://t.co/i/adsct cookieFound: true, false, false, 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: false, true, true url: https://t.co/i/adsct cookieFound: true, false, 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: false, true, true, true, false url: https://yandex.ru/ads/system/header-bidding.js cookieFound: true, false, false, false, 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: false, true, true url: https://yandex.ru/ads/system/header-bidding.js cookieFound: true, 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?)
|
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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 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, 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
result, different session: h3, h3, h3
unsupported: false, false, false
passed: false, false, false
test failed: 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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_1p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p,
fd223efd-d982-4205-8991-4c174b3b611c_1p,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p,
23dbf696-b511-4af0-8215-a5b0dc5adeee_1p
result, different session:
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined,
Error: can't access property "url",
cacheKeys[0] is undefined
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
2544c491-6194-41fd-b05f-1ec5d7617509_1p,
7e584888-0675-4bcc-8d9a-890854e93536_1p,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p,
d1761652-6401-43cb-bb24-e38dad8ccedd_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
unsupported: false, false, false
passed: false, false, false
test failed: 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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_1p_http,
8aacd9a5-6905-409b-bee6-f2472870053b_1p_http,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p_http,
8808e936-944c-4db8-9948-eb25a3075ce8_1p_http,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p_http
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p_http,
ef952293-28df-4d60-b81d-afeefc47b24a_1p_http,
0d43cc24-38c3-4bff-803c-218eea881108_1p_http,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p_http,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p_http
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p_http,
ef952293-28df-4d60-b81d-afeefc47b24a_1p_http,
0d43cc24-38c3-4bff-803c-218eea881108_1p_http,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p_http,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p_http,
705d573e-9142-4020-b079-9f26ba193bb7_1p_http
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p_http,
705d573e-9142-4020-b079-9f26ba193bb7_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p_http,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p_http,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p_http,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p_http,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p_http
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p_http,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p_http,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p_http,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p_http,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p_http,
fd223efd-d982-4205-8991-4c174b3b611c_1p_http,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p_http,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p_http,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p_http,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p_http,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p_http,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p_http,
23dbf696-b511-4af0-8215-a5b0dc5adeee_1p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p_http
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p_http,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p_http,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p_http,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p_http,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p_http
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p_http,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p_http,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p_http,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p_http,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
2544c491-6194-41fd-b05f-1ec5d7617509_1p_http,
7e584888-0675-4bcc-8d9a-890854e93536_1p_http,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p_http,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p_http,
d1761652-6401-43cb-bb24-e38dad8ccedd_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p_http,
29f9987d-bb12-42ae-8967-d096bf95a900_1p_http,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p_http,
c993758b-67cd-49d8-8136-1589ef721f2a_1p_http,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p_http
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p_http,
29f9987d-bb12-42ae-8967-d096bf95a900_1p_http,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p_http,
c993758b-67cd-49d8-8136-1589ef721f2a_1p_http,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p_http,
ed886100-2b92-47d5-9a9a-892116dc580d_1p_http
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p_http,
ed886100-2b92-47d5-9a9a-892116dc580d_1p_http
unsupported: false, false, false
passed: false, false, false
test failed: 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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_1p_js,
8aacd9a5-6905-409b-bee6-f2472870053b_1p_js,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p_js,
8808e936-944c-4db8-9948-eb25a3075ce8_1p_js,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p_js
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p_js,
ef952293-28df-4d60-b81d-afeefc47b24a_1p_js,
0d43cc24-38c3-4bff-803c-218eea881108_1p_js,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p_js,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p_js
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p_js,
ef952293-28df-4d60-b81d-afeefc47b24a_1p_js,
0d43cc24-38c3-4bff-803c-218eea881108_1p_js,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p_js,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p_js,
705d573e-9142-4020-b079-9f26ba193bb7_1p_js
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p_js,
705d573e-9142-4020-b079-9f26ba193bb7_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p_js,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p_js,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p_js,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p_js,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p_js
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p_js,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p_js,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p_js,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p_js,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p_js,
fd223efd-d982-4205-8991-4c174b3b611c_1p_js,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p_js,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p_js,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p_js,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p_js,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p_js,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p_js,
23dbf696-b511-4af0-8215-a5b0dc5adeee_1p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p_js
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p_js,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p_js,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p_js,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p_js,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p_js
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p_js,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p_js,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p_js,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p_js,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
2544c491-6194-41fd-b05f-1ec5d7617509_1p_js,
7e584888-0675-4bcc-8d9a-890854e93536_1p_js,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p_js,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p_js,
d1761652-6401-43cb-bb24-e38dad8ccedd_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p_js,
29f9987d-bb12-42ae-8967-d096bf95a900_1p_js,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p_js,
c993758b-67cd-49d8-8136-1589ef721f2a_1p_js,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p_js
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p_js,
29f9987d-bb12-42ae-8967-d096bf95a900_1p_js,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p_js,
c993758b-67cd-49d8-8136-1589ef721f2a_1p_js,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p_js,
ed886100-2b92-47d5-9a9a-892116dc580d_1p_js
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p_js,
ed886100-2b92-47d5-9a9a-892116dc580d_1p_js
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_1p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p,
fd223efd-d982-4205-8991-4c174b3b611c_1p,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p,
23dbf696-b511-4af0-8215-a5b0dc5adeee_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_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:
2544c491-6194-41fd-b05f-1ec5d7617509_1p,
7e584888-0675-4bcc-8d9a-890854e93536_1p,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p,
d1761652-6401-43cb-bb24-e38dad8ccedd_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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
unsupported: false, false, false
passed: false, false, false
test failed: 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_3385818867092927,
fake_46281906465185263,
fake_792084594259354,
fake_32468262429659944,
fake_5512676468969955
result, different session:
fake_3385818867092927,
fake_46281906465185263,
fake_792084594259354,
fake_32468262429659944,
fake_5512676468969955
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_7560459175949241,
fake_7601222799989407,
fake_8522230844324234,
fake_5551508285368421,
fake_9366399466516129
result, different session:
fake_7560459175949241,
fake_7601222799989407,
fake_8522230844324234,
fake_5551508285368421,
fake_9366399466516129
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_1476454992132079,
fake_6302497622883934,
fake_5444774841942877,
fake_5232176188275259,
fake_39906957662782294
result, different session:
fake_1476454992132079,
fake_6302497622883934,
fake_5444774841942877,
fake_5232176188275259,
fake_39906957662782294
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_6917747462443249,
fake_9218047155160383,
fake_3410121985049308,
fake_008947502979191224,
fake_05942967788480091
result, different session:
fake_6917747462443249,
fake_9218047155160383,
fake_3410121985049308,
fake_008947502979191224,
fake_05942967788480091
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_32907340711954935,
fake_6511822842423629,
fake_9335786167174869,
fake_28687003718819626,
fake_7246978545478275
result, different session:
fake_32907340711954935,
fake_6511822842423629,
fake_9335786167174869,
fake_28687003718819626,
fake_7246978545478275
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_6980216142347992,
fake_48012643900815744,
fake_7791117519868724,
fake_6215879240387445,
fake_18107909786441367
result, different session:
fake_00798052328947918,
fake_8599964976306333,
fake_6776380188871798,
fake_42501327152176227,
fake_9868717847906312
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_8089908189399744,
fake_1957678708901518,
fake_6183548972653796,
fake_27355646245037124,
fake_816030262369426
result, different session:
fake_6308331469892929,
fake_170220223221498,
fake_5887895856915428,
fake_4271300995457066,
fake_05092988867766168
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_9697902785840364,
fake_9009936680069108,
fake_5446644338273701,
fake_33361259454417724,
fake_7902877183933423
result, different session:
fake_9697902785840364,
fake_9009936680069108,
fake_5446644338273701,
fake_33361259454417724,
fake_7902877183933423
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_8791939703496763,
fake_6878816704074269,
fake_32042452609498673,
fake_7111717579300443,
fake_8183833166936398
result, different session:
fake_8791939703496763,
fake_6878816704074269,
fake_32042452609498673,
fake_7111717579300443,
fake_8183833166936398
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_9449313887594615,
fake_3833566099790462,
fake_3472950393899714,
fake_7230032015822261,
fake_12563504116304336
result, different session:
fake_058071489570471924,
fake_030947989996892744,
fake_5195029644092937,
fake_35518509995053704,
fake_8583960155676511
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_8710016277346873,
fake_7152254710045403,
fake_8291516506657968,
fake_21289597138657257,
fake_9873192729563356
result, different session:
fake_8710016277346873,
fake_7152254710045403,
fake_8291516506657968,
fake_21289597138657257,
fake_9873192729563356
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_11446502677063441,
fake_6685154720152657,
fake_6149711968155758
result, different session:
fake_11446502677063441,
fake_6685154720152657,
fake_6149711968155758
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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: 2, 2, 2
result, different session: 2, 2, 2
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_1p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p,
fd223efd-d982-4205-8991-4c174b3b611c_1p,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p,
23dbf696-b511-4af0-8215-a5b0dc5adeee_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_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:
2544c491-6194-41fd-b05f-1ec5d7617509_1p,
7e584888-0675-4bcc-8d9a-890854e93536_1p,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p,
d1761652-6401-43cb-bb24-e38dad8ccedd_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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_1p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_1p,
8aacd9a5-6905-409b-bee6-f2472870053b_1p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_1p,
8808e936-944c-4db8-9948-eb25a3075ce8_1p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_1p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_1p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_1p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_1p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_1p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_1p
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_1p,
ef952293-28df-4d60-b81d-afeefc47b24a_1p,
0d43cc24-38c3-4bff-803c-218eea881108_1p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_1p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_1p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_1p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_1p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_1p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_1p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_1p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_1p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_1p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_1p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_1p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_1p,
fd223efd-d982-4205-8991-4c174b3b611c_1p,
134d5c32-f35f-4a19-84f7-be9c498588ac_1p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_1p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
c92a0cea-5d35-4fb6-82dc-d812dd129944_1p,
b4872b5e-5d54-4e8d-8521-0713745bc320_1p,
8d0a427f-2dea-4963-b16b-037b6c2559a0_1p,
e47ccec0-ee13-4591-b0f2-850a3591a988_1p,
23dbf696-b511-4af0-8215-a5b0dc5adeee_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_1p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_1p,
2992f396-a55b-4543-ab70-f3ac6a141f80_1p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_1p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_1p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_1p
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_1p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_1p,
5ada1510-79c9-4933-a88d-96862c2f58c6_1p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_1p,
e45606be-04fe-4d17-86d5-a40cb10fc414_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:
2544c491-6194-41fd-b05f-1ec5d7617509_1p,
7e584888-0675-4bcc-8d9a-890854e93536_1p,
7ab09ee9-2d25-4f9c-8e7a-7681d843a52f_1p,
e63829c0-bd50-4895-8a11-5f12cc8f127e_1p,
d1761652-6401-43cb-bb24-e38dad8ccedd_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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_1p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_1p,
29f9987d-bb12-42ae-8967-d096bf95a900_1p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_1p,
c993758b-67cd-49d8-8136-1589ef721f2a_1p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_1p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_1p,
ed886100-2b92-47d5-9a9a-892116dc580d_1p
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: h3, h3, h3
unsupported: false, false, false
passed: false, false, false
test failed: 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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_3p,
ef952293-28df-4d60-b81d-afeefc47b24a_3p,
0d43cc24-38c3-4bff-803c-218eea881108_3p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_3p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_3p
result, different session:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_3p,
ef952293-28df-4d60-b81d-afeefc47b24a_3p,
0d43cc24-38c3-4bff-803c-218eea881108_3p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_3p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_3p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_3p,
fd223efd-d982-4205-8991-4c174b3b611c_3p,
134d5c32-f35f-4a19-84f7-be9c498588ac_3p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_3p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
fdd89f02-8709-4714-b190-1aebb5ae642c_3p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_3p,
5ada1510-79c9-4933-a88d-96862c2f58c6_3p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_3p,
e45606be-04fe-4d17-86d5-a40cb10fc414_3p
result, different session:
fdd89f02-8709-4714-b190-1aebb5ae642c_3p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_3p,
5ada1510-79c9-4933-a88d-96862c2f58c6_3p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_3p,
e45606be-04fe-4d17-86d5-a40cb10fc414_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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=${key}`]);
} catch (e) {
throw new Error('Unsupported');
}
}
read: async () => {
const cache = await window.caches.open('supercookies');
const cacheKeys = await cache.keys();
const url = cacheKeys[0].url;
return (new URL(url)).searchParams.get('key');
}
result, same session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_3p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_3p
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (key) => {
try {
const cache = await window.caches.open('supercookies');
cache.addAll([`test.css?key=${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
unsupported: false, false, false
passed: false, false, false
test failed: 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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_3p_http,
8aacd9a5-6905-409b-bee6-f2472870053b_3p_http,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p_http,
8808e936-944c-4db8-9948-eb25a3075ce8_3p_http,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p_http
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p_http
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p_http,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p_http,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p_http,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p_http,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p_http,
705d573e-9142-4020-b079-9f26ba193bb7_3p_http
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p_http,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p_http,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p_http,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p_http,
705d573e-9142-4020-b079-9f26ba193bb7_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p_http,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p_http,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p_http,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p_http,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p_http
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p_http,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p_http,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p_http,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p_http,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p_http
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p_http
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p_http,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p_http,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p_http,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p_http,
1f8d0026-8f14-4d17-b703-807d44ca3805_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(`${baseURI}headers`);
const cookie = (await response.json()).cookie;
return cookie ? cookie.match(/secret=([\w-]+)/)[1] : null;
}
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: async (secret) => {
// Request a page that will send an HTTPOnly 'set-cookie' response header with secret value.
await fetch(`${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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p_http,
ed886100-2b92-47d5-9a9a-892116dc580d_3p_http
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p_http,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p_http,
ed886100-2b92-47d5-9a9a-892116dc580d_3p_http
unsupported: false, false, false
passed: false, false, false
test failed: 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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
505c5d55-535b-411f-8b87-828941eaa81b_3p_js,
8aacd9a5-6905-409b-bee6-f2472870053b_3p_js,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p_js,
8808e936-944c-4db8-9948-eb25a3075ce8_3p_js,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p_js
result, different session: , , , ,
unsupported: false, false, false, false, false
passed: true, true, true, true, true
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p_js
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p_js,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p_js,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p_js,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p_js,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p_js,
705d573e-9142-4020-b079-9f26ba193bb7_3p_js
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p_js,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p_js,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p_js,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p_js,
705d573e-9142-4020-b079-9f26ba193bb7_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p_js,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p_js,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p_js,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p_js,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p_js
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p_js,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p_js,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p_js,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p_js,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p_js
unsupported: false, false, false, false, false
passed: false, false, false, false, false
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p_js
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p_js,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p_js,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p_js,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p_js,
1f8d0026-8f14-4d17-b703-807d44ca3805_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=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session: , , , ,
result, different session: , , , ,
unsupported: true, true, true, true, true
passed: undefined
test failed: false, false, false, false, false
|
write: (secret) => {
document.cookie = `secret=${secret}_js; max-age=3600; SameSite=None; Secure`;
}
read: () => document.cookie ? document.cookie.match(/secret=([\w-]+)/)[1] : null
result, same session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p_js,
ed886100-2b92-47d5-9a9a-892116dc580d_3p_js
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p_js,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p_js,
ed886100-2b92-47d5-9a9a-892116dc580d_3p_js
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_3p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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, 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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
unsupported: false, false, false
passed: false, false, false
test failed: 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_14594547638979538,
fake_1897607444888718,
fake_771909861987534,
fake_456105083799097,
fake_4513073487576109
result, different session:
fake_14594547638979538,
fake_1897607444888718,
fake_771909861987534,
fake_456105083799097,
fake_4513073487576109
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_11969257621520324,
fake_03847508328552807,
fake_00748559333127452,
fake_9581953271984942,
fake_03587549361930242
result, different session:
fake_11969257621520324,
fake_03847508328552807,
fake_00748559333127452,
fake_9581953271984942,
fake_03587549361930242
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_23483750831597505,
fake_5103285166260076,
fake_3070563040978198,
fake_9604137618075412,
fake_30919985622920465
result, different session:
fake_23483750831597505,
fake_5103285166260076,
fake_3070563040978198,
fake_9604137618075412,
fake_30919985622920465
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_5933227529649359,
fake_3650015966814235,
fake_8219958815651678,
fake_5605812825804575,
fake_17241889499339336
result, different session:
fake_5933227529649359,
fake_3650015966814235,
fake_8219958815651678,
fake_5605812825804575,
fake_17241889499339336
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_759064265461834,
fake_6368998585274337,
fake_19533995681249938,
fake_2702504599543336,
fake_5500045443566928
result, different session:
fake_759064265461834,
fake_6368998585274337,
fake_19533995681249938,
fake_2702504599543336,
fake_5500045443566928
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_7331833850330669,
fake_36075270597617437,
fake_5494840559690293,
fake_49836111291131946,
fake_5591703214840913
result, different session:
fake_796859235965828,
fake_8486133811774175,
fake_3869800562678869,
fake_04326167618675569,
fake_17749731171760552
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_7399478304704479,
fake_6468436677012002,
fake_7577194872277275,
fake_14899255878722406,
fake_1918486347409709
result, different session:
fake_7260279160161198,
fake_06764319959392062,
fake_060859836699445946,
fake_8243434071404245,
fake_010982142391064764
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_6599209244592659,
fake_7159790775699384,
fake_9155277272196376,
fake_53219819822521,
fake_10911571656692276
result, different session:
fake_6599209244592659,
fake_7159790775699384,
fake_9155277272196376,
fake_53219819822521,
fake_10911571656692276
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_5282698930457241,
fake_032503822375753,
fake_7802825378994864,
fake_41110934051002745,
fake_322318382493201
result, different session:
fake_5282698930457241,
fake_032503822375753,
fake_7802825378994864,
fake_41110934051002745,
fake_322318382493201
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_8634538053231573,
fake_7938028707481302,
fake_03932230192232011,
fake_49903805597880746,
fake_7167341822502886
result, different session:
fake_059492664809132734,
fake_5362407545925014,
fake_3954834477923579,
fake_31203935977955255,
fake_37159387273807964
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_2925203664550857,
fake_15439926812516158,
fake_029356325968679098,
fake_23106332351408798,
fake_3403441290367102
result, different session:
fake_2925203664550857,
fake_15439926812516158,
fake_029356325968679098,
fake_23106332351408798,
fake_3403441290367102
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_8190668246268251,
fake_45183600516755806,
fake_6486623687807294
result, different session:
fake_8190668246268251,
fake_45183600516755806,
fake_6486623687807294
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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: 2, 2, 2
result, different session: 2, 2, 2
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_3p,
ef952293-28df-4d60-b81d-afeefc47b24a_3p,
0d43cc24-38c3-4bff-803c-218eea881108_3p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_3p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_3p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_3p,
fd223efd-d982-4205-8991-4c174b3b611c_3p,
134d5c32-f35f-4a19-84f7-be9c498588ac_3p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_3p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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:
fdd89f02-8709-4714-b190-1aebb5ae642c_3p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_3p,
5ada1510-79c9-4933-a88d-96862c2f58c6_3p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_3p,
e45606be-04fe-4d17-86d5-a40cb10fc414_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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_3p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
unsupported: false, false, false
passed: false, false, false
test failed: 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:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_3p
result, different session:
505c5d55-535b-411f-8b87-828941eaa81b_3p,
8aacd9a5-6905-409b-bee6-f2472870053b_3p,
4e7bf136-a2b5-43c6-b44a-0689b1a5850c_3p,
8808e936-944c-4db8-9948-eb25a3075ce8_3p,
46b2bba4-ca0c-48ca-b040-7d68e5afad2d_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:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_3p
result, different session:
0c86cdc2-a4f7-4383-9eea-a3c59db4dc53_3p,
9cc22a7e-5dd6-4762-aaee-db43e2ed3961_3p,
dba35e1a-e1c8-4293-8b53-b400f9926b46_3p,
2afd5c7a-b0fc-40ef-9f6b-561fb1240fa8_3p,
dcfe49dc-0a80-474f-8be7-e8de025b4cf8_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:
ee986ab2-44cf-4a4b-82f0-97fadc4f5c20_3p,
ef952293-28df-4d60-b81d-afeefc47b24a_3p,
0d43cc24-38c3-4bff-803c-218eea881108_3p,
e86311c6-4d72-4bea-a9ed-dcd7133fe106_3p,
d4f36f38-bf4a-48b0-8f98-d1bd46c3ccf8_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:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_3p
result, different session:
1ca72f30-a18e-4ef3-b05d-6acaf93b7948_3p,
7bd7d1ef-ec36-4e99-b40e-c8d2baa1e90e_3p,
2afc9a71-fa29-4086-bc79-4f4d2d05b2ff_3p,
efc613b9-4698-4142-b24a-4a3d0044a2f5_3p,
705d573e-9142-4020-b079-9f26ba193bb7_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:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_3p
result, different session:
82c622bd-dfef-478d-b80b-ae33fb46c4eb_3p,
77f25da8-f4cf-4679-bff0-5a7b0616ed5a_3p,
b8cb8798-1db6-4fa6-9b41-2ffe754ecef9_3p,
18ab6f56-d530-4d12-8cc4-b013f1e6871d_3p,
57081620-7dc5-49d3-b9e2-0b9db3020bdc_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:
c3babcb4-ddf2-42a3-8d38-8b3bba7dc679_3p,
fd223efd-d982-4205-8991-4c174b3b611c_3p,
134d5c32-f35f-4a19-84f7-be9c498588ac_3p,
d3a76b9e-6dc5-43c4-bf62-d1fbe47a58e8_3p,
ffe8fc0e-726a-4322-bf55-717421adcbb9_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:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_3p
result, different session:
7d090cea-6dc5-4189-a5b3-ddf840e66e0f_3p,
2992f396-a55b-4543-ab70-f3ac6a141f80_3p,
781b10d7-56cc-4051-a901-2ddc95fd02e4_3p,
d6d78b7e-3781-452c-85a7-7ac1d6171b0d_3p,
1f8d0026-8f14-4d17-b703-807d44ca3805_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:
fdd89f02-8709-4714-b190-1aebb5ae642c_3p,
a0edf926-e1c3-472c-9c1a-2b6c4a078947_3p,
5ada1510-79c9-4933-a88d-96862c2f58c6_3p,
43a2dc03-e334-4d9b-9f84-c1371a8e9040_3p,
e45606be-04fe-4d17-86d5-a40cb10fc414_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:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_3p
result, different session:
12451e18-06d5-4f17-bd6f-3a2cb55a35f0_3p,
29f9987d-bb12-42ae-8967-d096bf95a900_3p,
a76db5fc-9d9a-4c34-b7a7-fc8efb1336bc_3p,
c993758b-67cd-49d8-8136-1589ef721f2a_3p,
fbb24b1d-aa31-4118-a8b1-051dbbe9e910_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:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
result, different session:
17bb724b-daa0-4ab5-932a-e40544ef27bc_3p,
b5c9b2e0-d10e-49b3-ab53-9e0719ebb486_3p,
ed886100-2b92-47d5-9a9a-892116dc580d_3p
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, 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
result, different session: 1, 1, 1
unsupported: false, false, false
passed: false, false, false
test failed: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: true, true, true leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: 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, false leak detected: true, true, true, true, true |
passed: true, true, true leak detected: 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, false leak detected: true, true, true, true, true |
passed: false, false, false leak detected: true, true, true |