Andreas Krey wrote:
NSA: There are people excluding US exits? Just let's set some of ours to india. (Where that is probably not their modus
Tor enthusiasts: Hmm, advertised country doesn't match GeoIP, let's take a closer look ...
When twitter notices one of their users always comes via tor, but never from US exits, and $otherservice does the same, they can collude and suspect that these two users are, in fact, the same person.
It's a good point but I can think of a scenario where a user excludes a particular country or countries for legal reasons or based on a geopolitical situation.
Alex