Facebook Koobface virus

Facebook virus message :

Hey, I have this hilarious video of you dancing. Your face is so red. You should check it out.

If you've received a message like that through Facebook or MySpace, you may have been exposed to the "Koobface" virus. "Koobface" comes through an e-mail sent by one of your social networking site friends inviting you to scope out a video.

Once the URL is clicked, "Koobface" prompts you to update your Flash player before the video can be displayed. Therein lies the virus, cloaked in a "flash_player.exe" file. According to the Kaspersky Lab, an antivirus organization working closely with Facebook, "the worms transform victim machines into zombie computers to form botnets."