This easy to use hacking tool originated in Greece in May 2002. The author of this virus is a hacker called psychakias. The possibilities of such program depend on the needs of the attacker. The attacker infects the PC via the e-mail or File and Print Sharing. A "server" allows him to connect via a "client" on his own machine. The functions of a RAT may vary, depending on the needs of the hacker. Some RATs can't really harm your PC and the only purpose they were made for is hooliganism. But some versions can steal vital information, delete files and even crash your system.