You are working on your computer, when suddenly your computer begins to act up. In a short time, the phone rings and there is a cheerful person on the other end saying that they have been notified that you are having problems with your computer. They offer to help you for a small fee. A really small fee. In a short time, they have your computer back up and running and ask for payment. You are more than happy to pay them a small fee and you are back on your way. You just got scammed. You aren't as anonymous as you may think when you are on the internet. If your computer gets infected with spyware or malware, getting your phone number is not so difficult, especially if you have a land line. These kind of scammers infect your machine, contact you and fix it, then get your payment information. Even if your machine appears to be running better, it does not mean that you are safe. They may leave other things on your machine that can collect other information about you. One option is to restore from a previous back. My choice would be to back up important files, erase the machine and start over. Don't trust people that call you that you haven't contracted to help you. If you are unsure, play it safe and check them out before you give them any account information. It may seem obvious now that this is a scam, but people make a living by doing this. They are very good liars and actors. Be aware.