China to require Internet censorship software on all PCs

China plans to require that all personal computers sold in the country as of July 1 be shipped with software that blocks access to certain Web sites, a move that could give government censors unprecedented control over how Chinese users access the Internet.

The government, which has told global PC makers of the requirement but has yet to announce it to the public, says the effort is aimed at protecting young people from "harmful" content. The primary target is pornography, says the main developer of the software, a company that has ties to China's security ministry and military.