Fingerprinting: Difference between revisions

Revision as of 17:58, 15 April 2026

This page tracks the deployment of Firefox's Fingerprinting Protection (FPP) feature.

Other documents that may be relevant depending on the audience:

SUMO page more appropriate for end-users of Firefox https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting
SUMO page for end users who might have (accidently or not) enabled Resist Fingerprinting https://support.mozilla.org/en-US/kb/resist-fingerprinting
Firefox's Fingerprinting Protection Architecture in Gory Detail https://docs.google.com/document/d/1FywogzvkWupoUoz4PcCp9nNd6aKOwBN-c2zRu2Xof9Y/edit?tab=t.0
Source Docs on the implementation: https://firefox-source-docs.mozilla.org/toolkit/components/resistfingerprinting/resistfingerprinting/implementation.html

Desktop

Protection Name	Channel	Version	Bugs
ScreenAvailToResolution	Enabled in FPP (PBM) Release as of 143; Enabled in Baseline Nightly-only as of 150
	Baseline Nightly	150	bug 1990514
	FPP (PBM) Release	143	bug 1978414
	FPP (PBM) Beta	143	bug 1978414
	FPP (PBM) Nightly	143	bug 1978414
	Regressions: bug 2016747
MaxTouchPointsCollapse	Enabled in FPP (PBM) Release as of 143; Enabled in Baseline Nightly-only as of 150
	Baseline Nightly	150	bug 1990514
	FPP (PBM) Release	143	bug 1978414
	FPP (PBM) Beta	143	bug 1978414
	FPP (PBM) Nightly	143	bug 1978414
	Regressions: bug 1991701 (Linux touch disabled by companion fix bug 1957658, re-enabled in 146/147); bug 2021715 (Linux Wayland count adjusted, 150)
EfficientCanvasRandomization	Enabled in FPP (PBM) Release as of 145; Enabled in Baseline Nightly-only as of 150
	Baseline Nightly	150	bug 2021606
	FPP (PBM) Release	145	bug 1993304
	FPP (PBM) Beta	145	bug 1993304
	FPP (PBM) Nightly	145	bug 1993304
	Regressions: bug 2025570 (Google Maps highway labels broken, fixed via RemoteSettings in 150/151)

Android

Protection Name	Channel	Version	Bugs
ScreenAvailToResolution	Enabled in FPP (PBM) Release as of 143
	FPP (PBM) Release	143	bug 1978414
	FPP (PBM) Beta	143	bug 1978414
	FPP (PBM) Nightly	143	bug 1978414
MaxTouchPointsCollapse	Enabled in FPP (PBM) Release as of 143
	FPP (PBM) Release	143	bug 1978414
	FPP (PBM) Beta	143	bug 1978414
	FPP (PBM) Nightly	143	bug 1978414
EfficientCanvasRandomization	Enabled in FPP (PBM) Release as of 145
	FPP (PBM) Release	145	bug 1993304
	FPP (PBM) Beta	145	bug 1993304
	FPP (PBM) Nightly	145	bug 1993304

@@ Line 12: / Line 12: @@
 == Desktop ==
-  {| class="wikitable"
+{| class="wikitable"
-  |-
+|-
-  ! Protection Name !! Channel !! Version !! Bugs
+! Protection Name !! Channel !! Version !! Bugs
-  |-
+|-
-  | rowspan="6" | ScreenAvailToResolution
+| rowspan="6" | ScreenAvailToResolution
-  | colspan="3" | '''Enabled in FPP (PBM) Release as of 143; Enabled in Baseline Nightly-only as of 150'''
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 143; Enabled in Baseline Nightly-only as of 150'''
-  |-
+|-
-  | Baseline Nightly
+| Baseline Nightly
-  | 150
+| 150
-  | {{bug|1990514}}
+| {{bug|1990514}}
-  |-
+|-
-  | FPP (PBM) Release
+| FPP (PBM) Release
-  | 143
+| 143
-  | {{bug|1978414}}
+| {{bug|1978414}}
-  |-
+|-
-  | FPP (PBM) Beta
+| FPP (PBM) Beta
-  | 143
+| 143
-  | {{bug|1978414}}
+| {{bug|1978414}}
-  |-
+|-
-  | FPP (PBM) Nightly
+| FPP (PBM) Nightly
-  | 143
+| 143
-  | {{bug|1978414}}
+| {{bug|1978414}}
-  |-
+|-
-  | colspan="3" | Regressions: {{bug|2016747}}
+| colspan="3" | Regressions: {{bug|2016747}}
-  |}
+|-
+| rowspan="6" | MaxTouchPointsCollapse
-== Android ==
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 143; Enabled in Baseline Nightly-only as of 150'''
+|-
-  {| class="wikitable"
+| Baseline Nightly
-  |-
+| 150
-  ! Protection Name !! Channel !! Version !! Bugs
+| {{bug|1990514}}
-  |-
+|-
-  | rowspan="4" | ScreenAvailToResolution
+| FPP (PBM) Release
-  | colspan="3" | '''Enabled in FPP (PBM) Release as of 143'''
+| 143
-  |-
+| {{bug|1978414}}
-  | FPP (PBM) Release
+|-
-  | 143
+| FPP (PBM) Beta
-  | {{bug|1978414}}
+| 143
-  |-
+| {{bug|1978414}}
-  | FPP (PBM) Beta
+|-
-  | 143
+| FPP (PBM) Nightly
-  | {{bug|1978414}}
+| 143
-  |-
+| {{bug|1978414}}
-  | FPP (PBM) Nightly
+|-
-  | 143
+| colspan="3" | Regressions: {{bug|1991701}} (Linux touch disabled by companion fix {{bug|1957658}}, re-enabled in 146/147); {{bug|2021715}} (Linux Wayland count adjusted, 150)
-  | {{bug|1978414}}
+|-
-  |}
+| rowspan="6" | EfficientCanvasRandomization
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 145; Enabled in Baseline Nightly-only as of 150'''
+|-
+| Baseline Nightly
+| 150
+| {{bug|2021606}}
+|-
+| FPP (PBM) Release
+| 145
+| {{bug|1993304}}
+|-
+| FPP (PBM) Beta
+| 145
+| {{bug|1993304}}
+|-
+| FPP (PBM) Nightly
+| 145
+| {{bug|1993304}}
+|-
+| colspan="3" | Regressions: {{bug|2025570}} (Google Maps highway labels broken, fixed via RemoteSettings in 150/151)
+|}
+== Android ==
+{| class="wikitable"
+|-
+! Protection Name !! Channel !! Version !! Bugs
+|-
+| rowspan="4" | ScreenAvailToResolution
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 143'''
+|-
+| FPP (PBM) Release
+| 143
+| {{bug|1978414}}
+|-
+| FPP (PBM) Beta
+| 143
+| {{bug|1978414}}
+|-
+| FPP (PBM) Nightly
+| 143
+| {{bug|1978414}}
+|-
+| rowspan="4" | MaxTouchPointsCollapse
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 143'''
+|-
+| FPP (PBM) Release
+| 143
+| {{bug|1978414}}
+|-
+| FPP (PBM) Beta
+| 143
+| {{bug|1978414}}
+|-
+| FPP (PBM) Nightly
+| 143
+| {{bug|1978414}}
+|-
+| rowspan="4" | EfficientCanvasRandomization
+| colspan="3" | '''Enabled in FPP (PBM) Release as of 145'''
+|-
+| FPP (PBM) Release
+| 145
+| {{bug|1993304}}
+|-
+| FPP (PBM) Beta
+| 145
+| {{bug|1993304}}
+|-
+| FPP (PBM) Nightly
+| 145
+| {{bug|1993304}}
+|}

Fingerprinting: Difference between revisions

Revision as of 17:58, 15 April 2026

Desktop

Android

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