I had someone phone up & tell me that M****soft had called them and told them I had a virus on my PC, and that my PC had sent them a message to this effect, and wanted me to turn on the PC and follow her directions.
I smelled a rat (and has some time to spare) so I started asking questions like 'what operating system am I running?' and 'what is my IP address?' (she couldn't answer these questions which is odd if she's receiving messages from my PC) whilst I pretended that I was starting up the PC.
I managed to keep her on the phone for almost 20mins before I said that, actually, I was running OSX on a MAC, and she couldn't be getting messages from MS about me - she then shouted that
I had been wasting
HER time and hung up on me.
Childish, I know, but satisfying.

For some reason she hasn't called me back.

mab