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Re: [tor-bugs] #31206 [Applications/Tor Browser]: http://ip-check.info detects browser window size with JS disabled

#31206: http://ip-check.info detects browser window size with JS disabled
--------------------------------------+---------------------------
 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  closed
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Critical                  |     Resolution:  not a bug
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 Actually the chances (or rather the statistics) that many other people use
 Tor Browser at all compared to the number of non-TB users are very small.
 So relying on the fact that most of them never resize their browser window
 (which sounds unlikely) is also questionable.

 This needs serious investigation, not just flippant closing as a "non-
 bug". It may not be a bug but indeed but it is an easy way to fingerprint
 users.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31206#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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