Just received email from Facebook, warning about a virus... though never clicked on any executables, still, I had to reset the password. A bit of annoying procedure, but it is better to be safe than sorry.
Subject: Security Warning From Facebook
We have detected that your Facebook account is infected with a form of malware, or virus, called Koobface. You downloaded the virus after receiving a message from a friend, which invited you to view a video.
To restore your account, please log in to Facebook and follow the instructions you see there. You can also learn more in our Help Centre at:
Facebook Security Team
Now, sitting and wondering how many users a day receive this warning from Facebook?
Subject: Facebook password change
You recently changed your Facebook password. As a security precaution, this notification has been sent to all email addresses associated with your account.
If you did not change your password, your account may have been the victim of a phishing scam. Please learn more about this and how to regain access to your account at http://www.facebook.com/help/?topic=security
The Facebook Team
Short link: http://➸.ws/~VvM$2e