Backdoor.CmjSpy.d

Many variants of this hacker tool appeared from April 2003 to June 2004. The only difference between them is that they install themselves in to the computer under different names. A RAT application works by a simple but effective principle: the hacker infects the machine with a "server" application via the e-mail or File and Print Sharing computer and can control it, using a "client" on his PC. The virus installs a "backdoor" in the security, so that the attacker can enter the computer unnoticed.