MyDoom worm spreading at record pace
Just days after it first surfaced, the MyDoom worm has become the fastest spreading computer virus in history. MyDoom's payload is far from innocuous, too.
When opened, the virus installs a stealth program on the victim's computer that opens up a software "back door." Attackers can then bypass the PC's security and turn the system into a bounce point, or proxy, for any network-based attack.
MyDoom is apparently programmed to launch a denial-of-service attack against SCO's web site, and in addition to mailing itself out as an email attachment, the worm is also spreading over Kazaa disguised as Winamp 5, ICQ 2004, and a couple of other applications.