In this collaborative study between the Citizen Lab and Department of Computer Science at the University of New Mexico we examine the implementation of censorship and surveillance in two IM clients maintained by two different Chinese companies. For a period of more than a year and a half, we downloaded and decrypted the censorship and surveillance keyword lists used by the client software of two IM programs used in China: TOM-Skype and Sina UC.

In this Tea Leaf Nation article, Citizen Lab Google Policy Fellow Jason Q. Ng examines the recent changes to censorship on Sina Weibo.

As citizens in China commemorate the twenty-fourth anniversary of June 4th today, we identified 71 keywords that are currently blocked from searching on Sina Weibo.