Backdoor.ServuDoor.a

Originated in December 2003, this small hacker tool requires only 73 kb disk space for storage. The infection peaked in the United states, although users from other countries shouldn't ignore this threat. The prime function of a RAT application is allowing the hacker to gain unauthorized access to user's PC. The application usually consists of two parts: the "server" and the "client". The first part embeds itself in victim's machine, opens a random port and awaits commands. The "client" is installed on hacker's PC add allows him to connect and control the infected PC. Hackers often use such applications combined with "trojans" and "backdoors" to make them more effective.