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[tor-bugs] #2875 [Tor bundles/installation]: Spoof Desktop Resolution in TorBrowser
#2875: Spoof Desktop Resolution 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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We currently have Javascript hooks in Torbutton to spoof our desktop
resolution, but this information is now available due to CSS3 media
queries. We need to patch Firefox at a deeper level to prevent any pieces
of it from obtaining valid desktop resolution information.
This could work as an about:config approach that tells the patch to either
spoof the next largest common desktop size that is bigger than the window,
or to a specific fixed size, or to the size of the content window (as if
the content window only was the entire desktop).
We'll also want to try to remap mouse event coordinates back to this
spoofed desktop:
https://developer.mozilla.org/en/DOM/Event/UIEvent/MouseEvent
Spoofing the content window to the desktop size is the cleanest approach
that leaks the least information, but the Panopticlick test makes people
believe that they are always unique because this is such a rare thing to
do relative to the rest of the web, so people are always wrongly
complaining we don't defend against Panopticlick :/
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2875>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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