[tbb-bugs] #21675 [Applications/Tor Browser]: Set window.navigator.hardwareConcurrency to a constant value

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Apr 26 22:44:22 UTC 2017

#21675: Set window.navigator.hardwareConcurrency to a constant value
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting, ff52-esr,        |  Actual Points:
  tbb-7.0-must                                   |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
                                                 |  Sponsor4

Comment (by arthuredelstein):

 Replying to [comment:3 cypherpunks]:
 > Maybe, this can help:
 > {{{
 > // return the maximum number of cores that navigator.HardwareConcurrency
 > pref("dom.maxHardwareConcurrency", 1);
 > }}}

 This pref works, but seems to require a Firefox restart. I suggest we use
 this pref for now and then in Firefox add a better live behavior once the
 resistFingerprinting pref is available in Workers.


Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21675#comment:5>
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