In Censorship in the Wild: Analyzing Web Filtering in Syria [PDF], researchers from INRIA, NICTA and University College London parse through 600GB worth of leaked logfiles from seven Blue Coat SG-9000 proxies used by the Syrian government to censor and surveil its national Internet connections. They find that the Assad regime's censorship is more subtle and targeted than that of China and Iran, with heavy censorship of instant messaging, but lighter blocking of social media. They also report on Syrians' use of proxies, Tor, and Bittorrent to evade national censorship. It's the first comprehensive public look at the network censorship practiced in Syria.
Censorship in the Wild: Analyzing Web Filtering in Syria [PDF] (Thanks, Gary!)