[tor-bugs] #17009 [Tor Browser]: Shift and Alt keys leak physical Keyboard layout

[Tor Bug Tracker & Wiki]

#17009: Shift and Alt keys leak physical Keyboard layout
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     Reporter:           |      Owner:  tbb-team
  arthuredelstein        |     Status:  needs_revision
         Type:  defect   |  Milestone:
     Priority:  normal   |    Version:
    Component:  Tor      |   Keywords:  tbb-fingerprinting,
  Browser                |  TorBrowserTeam201509
   Resolution:           |  Parent ID:
Actual Points:           |
       Points:           |
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Comment (by arthuredelstein):

 Replying to [comment:10 cypherpunks]:
 > Replying to [comment:8 arthuredelstein]:
 > > This reveals the platform (OS X), but not much else as far as I can
 tell. Or am I missing something?
 >
 > Yes, it reveals the platform. Can the platform already be determined by
 other means?

 Yes, unfortunately there are lots of ways for an adversary to determine
 the platform. For example differences in the font set, Intl formatting,
 graphics rendering, Math functions. For now we have decided not to attempt
 to conceal Mac vs Windows vs Linux, because it's too difficult and also
 costly to usability.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17009#comment:11>
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