Citizen Lab has come across a database, which has thousands of words, that are considered to be politically sensitive. Whenever a Skype message contains any of these words, it gets automatically blocked. The database on which these words are stored also stores the personal information of the users, including their IP address, username and phone number. The database is insecure and hence is publicly available, which is a blatant breach of security for the users.

According to Citizen Lab, there is a surveillance system in place, which selects and stores messages transmitted through online telephones, and text messages. The messages that get deleted may contain some commonly used words such as democracy, Taiwan, Tibet, Voice of America, milk powder, Olympic games, earthquake, Tiananmen and SARS. The database reportedly contains over 1,50,000 messages, and it is possible to identify all the senders and recipients by entering just a username.

The internet service provider Skype, which runs its services in China in a joint venture with the Chinese company TOM online, under the name TOM-Skype, says that they are aware of the filtering of data by the Chinese authorities, but are concerned by reports about the resultant breach of security.

Citizen Lab has enquired whether or not Tom online and Skype are cooperating with the Chinese authorities and if so to what extent.

President of Skype, Josh Silverman has said that it is common knowledge that that Tom Online follows procedures to meet the local laws and regulations, such as monitoring and blocking messages containing certain words, which the Chinese government disapproves of. However according to policy these messages are to be deleted. They will have to investigate to know if the policy has been changed to allow storage of these messages and why.

Protests erupted in Lhasa the capital of Tibet, against the Chinese government. The Chinese government blocked the popular video-sharing website YouTube to restrict the public from getting information on the protests. Soon after, access to other sites such as Yahoo!, Google News, the Guardian UK, The Times Online and the BBC was either completely cut off or selectively filtered.

The Chinese government usually encourages the use of the Internet for educational and business purposes, but has placed online filters to regularly block access to any foreign material that they feel is inappropriate or objectionable. Chinese websites such as youku.com, tudou.com and 56.com have not published any information about the protests in Tibet as theses sites are expected to enforce self-censorship.

Chinese users trying to access YouTube, just found a blank screen. The government has made no official statement about this move. Interestingly, today YouTube has almost as many videos depicting opposition to the Tibetan protests as it has of protesters against the Chinese government.

Video on YouTube showing protests in Tibet

This is the second time in less than a month that an Eastern government has blocked access to YouTube. In the last week of February, the government of Pakistan had ordered the national ISP to block access to YouTube, leading to the site going down worldwide due to a propogation error.

While the Internet allows individuals from all over the world to share their thoughts and experiences, it also allows more and more people in the world to become aware of the plight of others. Stamping out free speech by banning video sharing sites and newspapers might cocoon the citizens of China temporarily, but in the long run, the Chinese government will end up hurting its own credibility in the West.