[tor-talk] CloudFlare fingerprinting

CJ tor at tengu.ch
Sat Feb 28 11:23:17 UTC 2015



On 26/02/15 14:48, amharic at uni.de wrote:
> Don't know if the issue is already through here..., but:
> 
> Isn't it possible that CloudFlare's captchas allow fingerprinting of
> tor users (looking at typical errors, re-captchas / timing), given that
> everybody of us solves them over and over again? Not necessarly done by
> CloudFlare itself, but by whoever listens to enough of the traffic?
> 
> best,
> amharic.
> 

Hmm, good question I think. Might be interesting to get some Cloudflare
insiders about that, as well as Tor community "review".


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