[tbb-bugs] #28536 [Applications/Tor Browser]: SuperCookie Built Into TLS 1.2 and 1.3

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#28536: SuperCookie Built Into TLS 1.2 and 1.3
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 Reporter:  heyjoe                    |          Owner:  tbb-team
     Type:  defect                    |         Status:  closed
 Priority:  Very High                 |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:  worksforme
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Changes (by gk):

 * status:  new => closed
 * resolution:   => worksforme


Comment:

 {{{
 privacy.firstparty.isolate

 This feature prevents the browser from making requests to sites outside of
 the primary domain from the site. This prevents large ubiquitous services
 from following your keys around the web like a supercookie.
 }}}
 Yes, that's the purpose of this preference and the reason we set it. This
 breaks the cross-site tracking which could indeed be a problem. We leave
 the other preferences as-is, though, as this is no cross-site tracking
 risk as far as we know and you can clean state with New Identity to cope
 with long term tracking by first-parties. Thus, this works for me.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28536#comment:2>
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