We intend to enable font visibility restrictions in private browsing windows from Fx118. To reduce entropy exposed by fonts, we restrict the visibility of fonts to websites. The protection prevents websites from accessing all non-system and non-langpack fonts.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1849903 Standard: n/a Platform coverage: It apply on all desktop platforms, including Windows, Mac, and Linux. We won't cover Android momentarily, but we are working on it. Preference: The font visibility restrictions in PBM is behind the pref "privacy.fingerprintingProtection.pbmode". We will set this pref to true to enable this protection in private browsing windows. For normal windows, there is another pref called "privacy.fingerprintingProtection" to control the behavior. This feature was previously discussed in this "Intent to prototype" thread: https://groups.google.com/a/mozilla.org/g/dev-platform/c/tKOOrYXDoHA/m/X4mj4nc-AgAJ More information can be found there. -- Tim Huang Mozilla email:[email protected] -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAFjL7ML8wJ8RiokqTYKZNNFGYk9t7jwUv0EqTqco%3Dn6KOvDonA%40mail.gmail.com.
