My friend just called with the Trojan:Win32/Harasom.A page informing him that his files are encrypted and he will have to pay $300.00 to free them. I searched here and found a fix and we will be doing it tomorrow morning. My question is: how did he get this trojan? He has a new Dell desktop computer will windows 8.1 installed. It came with Macafee AV installed. He has purchased the AV already. Shouldn't his AV program stopped this infection? Thanks.