What is the Conficker Worm?
Microsoft released an update in October to resolve a critical security hole in the Windows "Server" service. Since people aren't as diligent about patching as they should be, hackers created a new worm that spread like wildfire, leaving systems completely under their control. Security researchers have determined that the virus is expected to go "live" on April 1st, 2009, causing your computer to do bad things—but since the worm uses a P2P protocol it's nearly impossible to identify the source.
How Does It Spread?
The worm originally started spreading using a network attack against the file sharing services in Windows, but since it can automatically update itself, it adapted to spread through the autoplay feature on removable media like USB thumb drives, by adding a new option to open where you see "publisher not specified". This allows the worm to spread to systems already patched against the original vulnerability, so using anti-virus software is even more important, because once it's on your computer it can spread further.
Exerpt from LifeHacker
More Info:
Microsoft
Fsecure
Symantech
Removal Tool Download:
Downadup Removal Tool - Symantec approved download.
