TrojanSpy.Win32.AdvancedKeyLogger

Hard to detect by design, this is a perfect tool for spying on someone. Although it was created in 2003, it is still a dangerous threat to users privacy. The keylogger creates a file, and stores all your keystrokes in it. The attacker can later study it and find all your passwords and other information. A newer version appeared in 2004. It has the same abilities, but some bugs were fixed.