[tbb-bugs] #13952 [Tor Browser]: TOR browser reports wrong resolution

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jan 13 12:23:54 UTC 2015

#13952: TOR browser reports wrong resolution
     Reporter:  yids         |      Owner:  tbb-team
         Type:  defect       |     Status:  new
     Priority:  critical     |  Milestone:
    Component:  Tor Browser  |    Version:  Tor: unspecified
   Resolution:               |   Keywords:  resolution
Actual Points:               |  Parent ID:
       Points:               |

Comment (by gk):

 Replying to [comment:3 Marnes]:
 > Replying to [comment:2 mcs]:
 > > Replying to [comment:1 Marnes]:
 > > > This is indeed bad for the user in terms of fingerprinting.
 > > >
 > > > The following is the fingerprint of vanilla tor browser, freshly
 installed and unmodified: http://puu.sh/dN8co/58ddab89bb.png (1 in 2.5
 > >
 > > Did you resize your browser window?
 > > Also see ticket:14098#comment:5
 > Nope, it's maximized and the same size.

 You maximize your window by resizing it and if you do that the respective
 protections Tor Browser is currently offering are gone. What is shown to
 you as the screen size if you do the test with a clean new Tor Browser
 without touching the size of your browser windows manually?

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13952#comment:4>
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