A man surfs the internet in Beijing on June 15, 2009. The designers of controversial Internet filtering software that China has ordered shipped with all new computers said they were trying to fix security glitches in the programme in the latest blow to the plan to include the filtering software with all PCs sold in China from July 1, which has been criticised overseas and even in China as a bid at mass censorship and a threat to personal privacy. Researchers at the University of Michigan who examined the software last week said it contained serious security vulnerabilities that could allow outside parties to take control of computers running it via remote access. Chinese authorities have a history of blocking sites that feature porn or politically unacceptable subjects such as the brutal crackdown on Tiananmen pro-democracy protests in 1989 and the banned spiritual group Falungong.
