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Website evidence · pilot dataset

Does mail.ru fingerprint you?

Browser signals observed; fingerprinting is unconfirmed.

Browser API activity met a monitored signal threshold in the latest measured scans. The activity alone does not establish a tracking purpose.

Open evidence JSON ↗

All 9 source records are included in the JSON. 2 older runs have no recorded timestamp; missing provenance stays unknown. The tabs show the latest usable homepage measurement for each setup. Later failed attempts remain in the history. Scan scope and methodology ↗

Inside the scan

← All websites

Visitor setup

Signals observed

1 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-22T20:32:22.565424Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleMail: Почта, Облако, Календарь, Заметки, Покупки — сервисы для работы и жизни

CanvasDraws text and reads canvas output.8 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext2 calls

Frame: https://mail.ru/

  • Inline caller recorded
  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 8 · col 31168
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.13 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

navigator.deviceMemory1 calls

Frame: https://mail.ru/

  • Inline caller recorded
navigator.getBattery1 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 75 · col 279
navigator.language5 calls

Frame: https://mail.ru/

  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74279
  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74406
  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://www.googletagmanager.com/gtag/js
navigator.languages2 calls

Frame: https://mail.ru/

  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74441
  • https://mail.ru/
navigator.maxTouchPoints1 calls

Frame: https://mail.ru/

  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 121
navigator.mimeTypes2 calls

Frame: https://mail.ru/

  • https://mail.ru/line 310 · col 9
  • https://mail.ru/line 310 · col 24
navigator.plugins1 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
navigator.userAgent100 calls

Frame: https://mail.ru/

  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 1854
  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 23497
  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 70852
  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 188732
  • https://mail.ru/
navigator.webdriver3 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 19 · col 459
screen.colorDepth3 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
screen.height4 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 242
  • https://www.googletagmanager.com/gtag/js
screen.width4 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 230
  • https://www.googletagmanager.com/gtag/js
window.devicePixelRatio3 calls

Frame: https://mail.ru/

  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 72943
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 170
Providers, script signatures, and DNS 2 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

  • Google Analyticswww.google-analytics.com
  • Google Tag Managerwww.googletagmanager.com
Network and worker observations 264 requests
Captured scripts
9
Instrumented frames
8
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • b.delivery.consentmanager.net
  • bs.yandex.ru
  • cdn.consentmanager.net
  • counter.yadro.ru
  • dzen.ru
  • login.vk.ru
  • mc.yandex.com
  • mc.yandex.ru
  • r.mradx.net
  • vk.ru
  • www.google-analytics.com
  • www.googletagmanager.com
  • yandex.ru
Other recorded API calls 2
  • document.cookie.read106 calls
  • document.cookie.write51 calls
Source record and integrity
Original source
results/headful/mail-ru-20261022T203222.json
Original file SHA-256
6da7b52bbe56fe63cc261ab652525df00922943850395ff09a89c75a0e09140d

Run ID: headful-6da7b52bbe56. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (5)

Visitor setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned
CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

No matching API call was captured.

Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 3 requests
Captured scripts
0
Instrumented frames
Not recorded
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • login.vk.ru
Source record and integrity
Original source
results/headful/mail-ru.json
Original file SHA-256
ed84c8792a316a6d37951f68850dc6db6e1e3e5704048970d39a407840ce45a6

Run ID: headful-ed84c8792a31. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-19T06:05:27.196672Z
Browser / scanner
156.0.8078.4 / 0.3
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headful/mail-ru-20261019T060527.json
Original file SHA-256
7e303b1fcb50a8da352e6911513d615ca08e212590038062b58c02d4e34eee47

Run ID: headful-7e303b1fcb50. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Scanner error

Scanner error

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Scanner error
Page context
Page not measured
Scan time
2026-10-22T15:04:59.320836Z
Browser / scanner
156.0.8078.4 / 0.4
Scanner error — no usable scan result

The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.

Source record and integrity
Original source
results/headful/mail-ru-20261022T150459.json
Original file SHA-256
8bcf8a92aab7337661869e79a6cc07f459d4b5462d29057fd8f0820ab3ec3a65

Run ID: headful-8bcf8a92aab7. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T15:05:00.301794Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headful/mail-ru-20261022T150500.json
Original file SHA-256
d98a1bf1fa9e8ac1ac3074b26343a8300dcc5c842db773475fa8511942e5257c

Run ID: headful-d98a1bf1fa9e. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Scanner error

Scanner error

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Scanner error
Page context
Page not measured
Scan time
2026-10-22T20:32:21.934809Z
Browser / scanner
156.0.8078.4 / 0.4
Scanner error — no usable scan result

The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.

Source record and integrity
Original source
results/headful/mail-ru-20261022T203221.json
Original file SHA-256
e235c2de40ae4dd273db6cc2a53d95cb74711f00371a9028ed5112eb7e5a5a2d

Run ID: headful-e235c2de40ae. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Signals observed

1 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-22T18:25:04.833675Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleMail: Почта, Облако, Календарь, Заметки, Покупки — сервисы для работы и жизни

CanvasDraws text and reads canvas output.8 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • https://mail.ru/
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext2 calls

Frame: https://mail.ru/

  • Inline caller recorded
  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 8 · col 31168
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.13 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

navigator.deviceMemory1 calls

Frame: https://mail.ru/

  • Inline caller recorded
navigator.getBattery1 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 75 · col 279
navigator.language5 calls

Frame: https://mail.ru/

  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74279
  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74406
  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://www.googletagmanager.com/gtag/js
navigator.languages2 calls

Frame: https://mail.ru/

  • https://home.imgsmail.ru/resplash/900401/j/app-68jngTb2.jsline 23 · col 74441
  • https://mail.ru/
navigator.maxTouchPoints1 calls

Frame: https://mail.ru/

  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 121
navigator.mimeTypes2 calls

Frame: https://mail.ru/

  • https://mail.ru/line 310 · col 9
  • https://mail.ru/line 310 · col 24
navigator.plugins1 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
navigator.userAgent117 calls

Frame: https://mail.ru/

  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 1854
  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 23497
  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://www.googletagmanager.com/gtag/js
navigator.webdriver3 calls

Frame: https://mail.ru/

  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 19 · col 459
screen.colorDepth3 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
screen.height4 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 242
  • https://www.googletagmanager.com/gtag/js
screen.width4 calls

Frame: https://mail.ru/

  • https://mail.ru/
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 230
  • https://www.googletagmanager.com/gtag/js
window.devicePixelRatio3 calls

Frame: https://mail.ru/

  • https://limg.imgsmail.ru/whiteline/2.233.3/inline.modern.jsline 1 · col 72943
  • https://mc.yandex.ru/metrika/tag.jsline 16 · col 124
  • https://top-fwz1.mail.ru/js/code.jsline 73 · col 170
Providers, script signatures, and DNS 2 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

  • Google Analyticswww.google-analytics.com
  • Google Tag Managerwww.googletagmanager.com
Network and worker observations 238 requests
Captured scripts
11
Instrumented frames
8
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • b.delivery.consentmanager.net
  • bs.yandex.ru
  • cdn.consentmanager.net
  • counter.yadro.ru
  • dzen.ru
  • login.vk.ru
  • mc.yandex.com
  • mc.yandex.ru
  • r.mradx.net
  • vk.ru
  • www.google-analytics.com
  • www.googletagmanager.com
  • yandex.ru
Other recorded API calls 2
  • document.cookie.read148 calls
  • document.cookie.write75 calls
Source record and integrity
Original source
results/headless/mail-ru-20261022T182504.json
Original file SHA-256
036808b7636e1f341896b63c621d7a86842af1f24b2255c3096624dcdbecde45

Run ID: research-036808b7636e. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (2)

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headless/mail-ru.json
Original file SHA-256
3d0030c3a8604f78a1c0ef5d516dd5a79f3e6a6932712efd3b60e254fd84b04a

The research mode is inferred from the archive folder because this legacy record has no mode field.

Run ID: research-3d0030c3a860. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-19T05:51:00.351609Z
Browser / scanner
156.0.8078.4 / 0.3
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headless/mail-ru-20261019T055100.json
Original file SHA-256
fff913206d1ee674f6d883e8bc1194a43a2ee3587d798f5f707948c3c6ed155c

Run ID: research-fff913206d1e. The JSON contains sanitized observations, not the original private scan payload.

Queries, request bodies, cookies, extracted values, raw errors, and session payloads are excluded before publication. The source digest identifies the original private record.

Read the sanitized JSON →