Backdoor Trojan is usually caught through a program called ICQ Nuke. After infecting your computer, Backdoor Trojan may chat with its parent server and tell an anonymous user your computer name, Internet name, username, etc. Backdoor may also lock your mouse, hide your task bar, open and close your CD-ROM, monitor tasks running, disable "Ctrl-Esc" and "Alt-Ctrl-Del" commands, and control Windows
notpa.exe