[meta] Prevent websites from detecting private browsing
Categories
(Firefox :: Private Browsing, task, P3)
Tracking
()
People
(Reporter: 08xjcec48, Unassigned)
References
Details
(Keywords: meta)
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Comment 1•8 years ago
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Updated•6 years ago
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Updated•6 years ago
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Updated•5 years ago
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Comment 11•5 years ago
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Updating the affected versions is not a useful change. This behavior can be seen on trunk.
Updated•3 years ago
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Updated•2 years ago
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Comment 13•2 months ago
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FYI: OPFS/File System API is not available in PB windows
- e.g. promising
navigator.storage.getDirectory()
will throw a SecurityError - this does not happen in Incognito Windows on chrome
I'll leave it up to you guys if you want (or have plans) to pursue this.
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Comment 14•2 months ago
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Andrew, please see #c13. If appropriate, file a new issue and mark it as a dependency of this meta bug.
Comment 15•2 months ago
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Sorry for the noise: this may be out of scope: but there is also GPC
which is default disabled (but has a UI setting) but enforced in PB windows. Opt-in doesn't work (only a tiny percentage of users will change the setting), so whilst not 100% accurate, scripts won't care if they seek to punish PB window users. Without getting into why it's not default enabled everywhere - perhaps it can also be enabled with ETP Strict since that implies the user opted in (which is the case with DNT
) in e.g. see Bug 1912841 if you want to pursue this. Personally, I think the two signals should be aligned at a minimum - at best, GPC default enabled for all (I still don't fully know why this isn't the case - e.g. Brave does this)
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Comment 16•4 hours ago
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I'm going to close this because there haven't been any replies to the latest comments, and the actual examples we had were addressed by Bug 1639542 and Bug 1959535.
If you come across any website that still prevents Firefox users from accessing it in private windows, please submit a new bug report.