What then happens is your details are sold on to someone in Mumbia India and someone from there will ring you and tell you they are from Microsoft and you have a problem on your PC, if you are stupid enough to believe them and some folk are they will have you credit card number off you and rip you for around £500 for a usless interent security package, they will by then have your credit card details and you will be scammed again later. Mostly these are scams from countries you give millions of dollars in aid. The internet has become a very good educational tool for the wrong reason, as you get older you need to get a bit smarter.