[tbb-bugs] #18995 [Applications/Tor Browser]: Investigate CacheStorage feature for tracking usage in Tor Browser

Tor Bug Tracker & Wiki blackhole at torproject.org
Mon May 9 13:25:45 UTC 2016


#18995: Investigate CacheStorage feature for tracking usage in Tor Browser
-------------------------------------+-------------------------------------
     Reporter:  gk                   |      Owner:  tbb-team
         Type:  task                 |     Status:  new
     Priority:  High                 |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  ff45-esr,
     Severity:  Major                |  TorBrowserTeam201605
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 In ESR45 we have a new CacheStorage feature that might be usable for
 tracking users. We should bind it to our cache isolation code if so. Even
 though being part of the ServiceWorker spec it is not bound to it. Quoting
 from comment:8:ticket:18545
 {{{
 The API page includes "It provides a master directory of all the named
 caches that a ServiceWorker, other type of worker or window scope can
 access (you don't have to use it with service workers, even though that is
 the spec that defines it) and maintains a mapping of string names to
 corresponding Cache objects." Also, some of the top-level objects are
 present in regular DOM windows. See:
 ​https://lists.torproject.org/pipermail/tbb-dev/2016-May/000372.html
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18995>
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