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[tor-bugs] #9501 [TorBrowserButton]: Reduce TorBrowser's fingerprint by making the user agent string blend into the crowd
#9501: Reduce TorBrowser's fingerprint by making the user agent string blend into
the crowd
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Reporter: DC | Owner: mikeperry
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: TorBrowserButton | Version: Tor: unspecified
Keywords: | Parent:
Points: | Actualpoints:
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I have a suggestion. In my humble opinion, I think it's brilliant:
To reduce TorBrowser's fingerprint, change the UA string to match
whichever Firefox UA string is most frequently seen in the wild. You could
get that information from the EFF's Panopticlick project.
So basically, take the ~ 3 million browser fingerprints in Panopticlick.
Grab UA's that match "Firefox" and pick whichever one is most common. The
result probably looks somewhat like this:
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0
Use that exactly as TorBrowser's UA string... Basically, lie. Pick the UA
string that will most make TorBrowser blend into the crowd and produce the
least unique fingerprint.
The reason I say to search for "Firefox" instead of just picking the most
popular string (probably some version of Chrome) is that a Firefox browser
pretending to be Chrome might stand out and inadvertently have a very
unique fingerprint.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9501>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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