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

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Feb 23 21:54:07 UTC 2016

#18361: Issues with corporate censorship and mass surveillance
 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:                                |

Comment (by sjmurdoch):

 We have done a survey of this problem and the results are published in the
 paper [http://sec.cs.ucl.ac.uk/users/smurdoch/papers/ndss16doyousee.pdf
 '"Do You See What I See? Differential Treatment of Anonymous Users"'] (see
 also the [https://www.benthamsgaze.org/2016/02/23/do-you-see-what-i-see/
 accompanying blog post]). Our results show that Cloudflare blocks around
 10–50% of Tor nodes and is one of the major reasons that Tor users are
 unable to access websites from the Alexa top-1000 list (though it was
 worse before June 2015).

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18361#comment:105>
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