This problem isn't new, but a number of my Facebook friends have been attacked this week with the Koobface worm and have been sending me malicious links without knowing it.
In light of this, I just wanted make a post about it for all of you that may not be aware how it works... because it seems several of my older Facebook friends are spreading the virus because they may not know any better...
DO NOT click on any strange link sent to you via a Facebook message or wall post. On two I got today, the subject lines were "Sexy video with u." and "You're very sexy on this vid. i envy you." and the message had a long link in it. You can also tell it's not real because it was sent to tons of people, so obviously it wasn't a video of me... unless 100 people were in the same sexy video with me. And I think I would remember a video like that.
When you click on the link, it prompts you to download software to watch a video and then it spams all your Facebook friends with the malicious link. This type of worm is also found on MySpace.
If you think you clicked on a link like this, visit the Facebook Security Center, scan your computer for viruses and reset your password.