[prev in list] [next in list] [prev in thread] [next in thread] 

List:       tor-talk
Subject:    Re: [tor-talk] Fingerprinting issue in Tor Browser for macOS
From:       Matthew Finkel <matthew.finkel () gmail ! com>
Date:       2018-04-30 21:57:45
Message-ID: 20180430215745.xdz3zoc44gs562yc () localhost
[Download RAW message or body]

On Mon, Apr 30, 2018 at 04:26:00AM +0000, Nathaniel Suchy (Lunorian) wrote:
> When using Tor Browser for macOS, the EFF's tool panoptclick shows that
> a large amount of fonts are available, while Tor Browser for Linux
> claims only Wingdings is available. This could allow a website know
> whether a Tor User is using Linux or not helping to create a unique
> fingerprint. Thoughts?

Yes, sadly this is the current state. The three supported platforms for
Tor Browser are distinguishable by looking at a user's available fonts.
This is current a compromise between fingerprintability and usability.
Please see the Tor Browser Design document for additional details [0].
However, note this isn't the only method for identifying the underlying
platform.

[0]
Section 4.6, Subsection "Specific Fingerprinting Defenses in the Tor
Browser", Item 6. Fonts
https://www.torproject.org/projects/torbrowser/design/#fingerprinting-linkability
-- 
tor-talk mailing list - tor-talk@lists.torproject.org
To unsubscribe or change other settings go to
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk

[prev in list] [next in list] [prev in thread] [next in thread]