Three researchers, five conjectures: An empirical analysis of tom-Skype censorship and surveillance
Jeffrey Knockel, Jedidiah R. Crandall, Jared Saia · 2011
We present an empirical analysis of TOM-Skype censorship and surveillance. TOM-Skype is an Internet telephony and chat program that is a joint venture between TOM Online (a mobile Internet company in China) and Skype Limited. TOM-Skype contains both voice-over-IP functionality and a chat client. The censorship and surveillance that we studied for this paper is specific to the chat client and is based on keywords that a user might type into a chat session. We were able to decrypt keyword lists used for censorship and surveillance. We also tracked the lists for a period