[anti-censorship-team] Identify from which continent people connect from

[meskio]

Quoting mxz+tor-anti-censorship-team--- via anti-censorship-team (2023-03-20 22:31:23)
> a while ago (10.02.2023) I tried to send an email on the tor-talk mailing list 
> but apparently it never got through as it's still awaiting approval. (it 
> wasn't denied either, afaik)

I think tor-talk is being having less and less movement in favor of the 
forum[0], but we should either close the list or take care of the moderation.  
Sorry.

> recently, there was an interesting side note on the cryptography mailing list 
> [1].
> Quote:
> 
> > (People have written code to predict what continent an anonymous person using Tor is on, based on noticing over a period of time when 
> their remote system clocks ran faster or slower, assuming that was 
> caused by nighttime versus daytime temperatures.)
> 
> I was wondering if any of you know about this and where I could find 
> code that does this? Any links to research and papers would be highly 
> appreciated, too.
> 
> Especially, I'm wondering how they do this:
> 
> - via differences in the above mentioned system clock (impressive?!)
> - timing analysis with latency? things like lower latency in Europe as 
> there are more tor relays around compared to Argentina.
> - do you need to have any prerequisites? e.g. controlling at least one 
> node, or the exit node, or a "clear text" server/hidden service that 
> someone connects to?
> 
> 
> Finally, if that's the wrong list, please refer me to the right one.
> Thanks!
> 
> 
> [1]: 
> https://www.metzdowd.com/pipermail/cryptography/2023-February/038109.html

I didn't know about that. You can ask in the forum[0], maybe someone there knows 
about it.


[0] https://forum.torproject.net

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