[tor-bugs] #13636 [- Select a component]: Screen size leaking fingerprinting information

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

#13636: Screen size leaking fingerprinting information
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 Reporter:  KarelBilek            |          Owner:
     Type:  defect                |         Status:  new
 Priority:  normal                |      Milestone:
Component:  - Select a component  |        Version:
 Keywords:                        |  Actual Points:
Parent ID:                        |         Points:
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 As visible in here

 https://panopticlick.eff.org/

 TBB is leaking information about me via screen size. Screen size is leaked
 only with JS enabled; however, it uniquely fingerprints me. (When I resize
 the window the screen size info is changed.)

 It essentially defeats the purpose of using Tor, since it fingerprints me
 uniquely.

 I am not sure what to do with it, since it probably is needed for
 JavaScript to work. One thing that would be possible is to force only
 certain window sizes for everybody across operating systems.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13636>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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