Security experts say they have contained the Sobig worm by identifying and blocking computers that are key to co-ordinating it. Computer specialists cut off the worm’s circulation by repairing 20 servers it was using to blast infected emails into users’ inboxes around the world. However, in China the virus was reported to be spreading very quickly, with one internet security firm in Beijing suggesting that 30% of computers may have already been infected. Initial fears over an instruction in the worm’s code to point infected machines to a server controlled by the virus writer between 1900 and 2200 GMT (2000-2300 BST) on Friday were unfounded. Another instruction will repeat the request on Sunday at the same time and experts have again expressed concerns that a malicious program could be downloaded, but fears have largely subsided. “There’s a potential risk for Sunday, but I think it’s really mitigated,” said Chris Rouland, vice president for research and development at US-based Internet Security Systems. Full Story