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

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon Feb 22 09:27:16 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 arthuredelstein):

 Replying to [comment:20 marek]:
 > Ok, let me try to put the discussion on track again.
 > I would be very interested in getting the zero-knowledge proofs working.
 That is - require TBB user to prove he's human exactly once, and then
 reuse this data across the browsing session, without losing anonymity.
 This is not CloudFlare specific idea, there are many other providers using
 captcha. We could have a generic technology for proving "i'm-a-human".

 Building the infrastructure for a zero-knowledge proof system sounds like
 a fascinating but expensive and long-term project. And I wouldn't be
 confident that CloudFlare would even adopt such a thing once it became
 available, unless they made a significant investment in the work at the

 Personally I am more interested in what near-term adjustments CloudFlare
 could make to reduce the CAPTCHA burden on Tor users, which seems to be
 unnecessarily high. Marek, do you have any thoughts about my suggestions
 for reducing CAPTCHA use in comment:17?

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18361#comment:22>
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