Re: [tor-bugs] #30532 [Applications/Tor Browser]: font FP reveals different Windows releases

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#30532: font FP reveals different Windows releases
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 Reporter:  Thorin                    |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  High                      |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-fingerprinting-fonts  |  Actual Points:
Parent ID:  #18097                    |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by Thorin):

 https://bugzilla.mozilla.org/show_bug.cgi?id=1121643#c64

 > If your system is running the DirectWrite font backend (i.e. if hardware
 acceleration is enabled), then Arial Black is not a valid font-family name
 (it's a face within the extended Arial family) - see:
 https://bugzilla.mozilla.org/show_bug.cgi?id=644385
 >
 > The same applies to other faces in your list such as Segoe UI Light and
 Segoe UI Semibold; and others are legacy bitmap-only or vector fonts (e.g.
 FixedSys, HELV, Terminal) that DirectWrite does not support. So those
 fonts will not appear as available, regardless of the presence of the
 whitelist.

 Well, that explains that then, I think

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30532#comment:11>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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