Infected files launch IE [Internet Explorer - Ed] and load a page that asks the user to download a codec. The download, a Trojan horse, installs a proxy program to route other traffic through the PC.OK, there's lots of geeky security stuff at the link if you're interested. If you're not, there's a simple rule:
ANY time you're told that you "need to download a new codec" you say NO.
Gozer: Are you a God?
[Ray looks at Venkman, who nods]
Gozer: Then... DIE!
[Lightning flies from her fingers, Ghostbusters almost wiped out]
Winston: Ray, when someone asks you if you're a god, you say "YES"!
So, if y'all like to download MP3s from p2p networks, and Gozer asks you if you want to download a new codec, go ahead and say yes. If you're a God.