[tbb-bugs] #18361 [Tor Browser]: Issues with corporate censorship and mass surveillance

[Tor Bug Tracker & Wiki]

#18361: Issues with corporate censorship and mass surveillance
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 Reporter:  ioerror                       |          Owner:  tbb-team
     Type:  enhancement                   |         Status:  new
 Priority:  High                          |      Milestone:
Component:  Tor Browser                   |        Version:
 Severity:  Critical                      |     Resolution:
 Keywords:  security, privacy, anonymity  |  Actual Points:
Parent ID:                                |         Points:
  Sponsor:                                |
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Comment (by madD):

 Replying to [comment:116 jgrahamc]:
 > Replying to [comment:100 madD]:
 > > Replying to [comment:82 jgrahamc]:
 > >  > 0. We fixed the bug that caused a new CAPTCHA to be served for a
 site when the circuit changes.
 > > Does this fixed CAPTCHA record users' reaction time, order of clicks,
 or mouse movements?
 >
 > The fix I am talking about does not involve JavaScript or any of those
 things at all.
 But I was not asking about the particular bug fix, you realize. The
 subject of my repeated question is the ability of CF CAPTCHA to capture
 response of users such as mouse movements, reaction time, order of
 checkbox selection. Is this kind of information transferred out of users
 device by submitting a CF CAPTCHA?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18361#comment:140>
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