[tor-bugs] #15580 [Tor Browser]: Update design doc for TBB 4.5

[Tor Bug Tracker & Wiki]

#15580: Update design doc for TBB 4.5
-------------------------+-------------------------------------------------
     Reporter:           |      Owner:  mikeperry
  mikeperry              |     Status:  new
         Type:  task     |  Milestone:
     Priority:  normal   |    Version:
    Component:  Tor      |   Keywords:  tbb-4.5-alpha, TorBrowserTeam201505
  Browser                |  Parent ID:
   Resolution:           |
Actual Points:           |
       Points:           |
-------------------------+-------------------------------------------------

Comment (by gk):

 {{{
 When first party isolation
 is used with explicit identifier storage that already has a constrained
 third
 party scope (such as cookies, DOM storage, and cache)
 }}}
 Hm... why do you think DOM storage and cache have a constrained third
 party scope? SafeCache is basically the result of trying to apply the idea
 of a third party scope afterwards. And DOM storage, well, there is a small
 "may" in the spec (http://dev.w3.org/html5/webstorage/#user-tracking):
 {{{
 User agents may restrict access to the localStorage objects to scripts
 originating at the domain of the top-level document of the browsing
 context, for instance denying access to the API for pages from other
 domains running in iframes.
 }}}
 And Mozilla did not manage to implement that "may" yet due to various
 concerns/issues:
 https://bugzilla.mozilla.org/show_bug.cgi?id=536509

 Thus, if we want to add examples unconditionally as you did (which is a
 good idea) just having cookies there seems better.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15580#comment:11>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online