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Re: [tor-bugs] #5798 [Tor Browser]: Improve persistence and WebFont compatibility of font patch
#5798: Improve persistence and WebFont compatibility of font patch
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Reporter: | Owner: tbb-team
mikeperry | Status: new
Type: defect | Milestone:
Priority: major | Version:
Component: Tor | Keywords: tbb-fingerprinting, interview, tbb-
Browser | testcase, tbb-firefox-patch
Resolution: | Parent ID:
Actual Points: |
Points: |
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Comment (by arthuredelstein):
Replying to [ticket:5798 mikeperry]:
> Sid Stamm reviewed my font count limiting patch and suggested that the
nsPrefShell is the wrong place to store font counts, since it may be
cleared in circumstances such as refreshes/redirects. We probably want
something that has a similar lifetime to cookies. Perhaps the Content
Prefs database?
After #5752 lands, each URL-bar domain will be assigned a separate
identity. So perhaps a good approach would be to maintain a font-limit for
each Tor identity (URL-bar domain). I hope that would counter the multi-
frame circumvention in comment:13.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5798#comment:21>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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