Call From "Microsoft"
Understand I'm working long distance with my mom whose computer literacy is rather limited. She got a call from someone claiming to represent Microsoft. Fortunately she had the good sense to recognize a scam and asked the guy if she could have a phone number to call him at. He gave her an eleven digit phone number. ;-)
What's interesting is that she was having problems with her computer immediately before the phone call. Could it just be a coincidence or is something more sinister afoot.
She had a virus a while back that I cleaned up. If I recall correctly, I installed Microsoft Security Essentials as part of the process.