Yahoo! News - New worm possibly infecting millions of computers:

Yahoo! News - New worm possibly infecting millions of computers: experts: "STOCKHOLM (AFP) - A new Internet worm is spreading worldwide and has probably already infected millions of computers, a Finnish anti-virus expert told AFP.



The Sasser worm can infect any computer that is switched on and connected to an Internet service provider, and unliked most other worms or viruses is not spread by email, said Mikko Hyppoenen, head of anti-virus research at the Finnish Internet security firm F-Secure.
'This is one of few worms that spreads automatically. It is enough for your PC to be on,' he told AFP in a telephone interview from Helsinki.
The worm typically shuts down the computer then automatically re-boots it, repeating the procedure several times. Hyppoenen said computers behind a firewall should be spared from the attack.
He stressed that the worm, while inconvenient, was otherwise harmless and other experts said it was relatively simple to destroy."