Tor and censorship: lessons learned

Roger Dingledine

Tor was originally designed as a civil liberties tool for people in the West. But if governments can block connections *to* the Tor network, who cares that it provides great anonymity? A few years ago we started adapting Tor to be more robust in countries like China. We streamlined its network communications to look more like ordinary SSL, and we introduced "bridge relays" that are harder for an attacker to find and block than Tor's public relays.

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