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[tor-bugs] #2872 [Tor bundles/installation]: Limit the fonts available in TorBrowser
#2872: Limit the fonts available in TorBrowser
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Reporter: mikeperry | Owner: mikeperry
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: Tor bundles/installation | Version:
Keywords: | Parent: #2871
Points: | Actualpoints:
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According to the Panopticlick data set, the font list (which they obtained
through plugins) was the second most identifiable chunk of data they saw,
behind plugins themselves. We block plugins, but fonts are still available
through CSS.
There are seemingly two potential ways to solve this:
1. Ship with a fixed set of fonts in TorBrowser
2. Limit the number of fonts that can be loaded on a single page
Because of the wide variety of languages we support, and because we'd like
this feature merged upstream in Firefox, I think the way to do this is is
#2. The maximum number of fonts per page should be governed by an
about:config setting.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2872>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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