Solve : Microsoft warns on support scams?

A survey from MICROSOFT reveals just how widespread the fake tech support CALL scam is becoming.

The crooks cold-call people at home and claim to be calling from Microsoft or a well-known security firm and offering "free security checks".
http://goo.gl/alQ4l hi, yeah I got a call from someone claiming to be from Microsoft, unfortunately I kinda fell for the scam by letting them have access over my computer although I have recently reformatted the computer when i gave them access to my computer I'm not too sure if my external hard drive was connected when this occurred but after I found out it was a scam I immediately did a complete system RESTORE with the reformatting disk I got along with my laptop. right now I'm still not sure if I'm completely safe. any advice would be GREATLY appreciated thank youMy mom pretended to be EXTREMELY computer-illiterate and told them we had a Mac and they were so confused. They told her to open Internet Explorer to download the RAT, and she said "Is that like a Safari?"