Yes, Tor recently made a change to that. This does increase fingerprinting but not by much. A lot of Tor users are using Linux rather than Windows.
this post was submitted on 23 Nov 2024
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Using TOR Browser, my user agent is:
Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0
... so I confirm that Windows is not spoofed now, if ever it were.
You can see what Web hosts see. Visit:
Does it increase fingerprinting? I imagine there might be some non-user-agent way to determine the OS. Like with image handling or whatever.
It's probably more unique and suspicious for a linux browser to pretend to be Windows than a Linux system disclosing itself as Linux.
Pretty sure the TOR user agent is just default firefox, by design. It's very easy to detect OS with very rudimentary fingerprinting techniques, a lot of which are blocked by the TOR browser but they can never get them all.
Like with image handling or whatever.
I'd expect TOR browser to mitigate this. Canvas2D is disabled for instance and system fonts aren't exposed.
Most other things could be mitigated by making every platform use the same code paths for e.g. font rendering. It should be pretty damn hard to determine which OS it is when the userspace is the same. I don't know whether TOR browser currently does this though.
Tor scans for viruses?
OP uses tor browser to access websites that scan files for viruses
I see, thx
That strikes me as an easy thing to miss; I would see the user agent string myself and let the project's maintainers know about it