Trojan Horse List - Malware Library

Trojan horse, sometimes referred to simply as a Trojan, is a harmful type of software that looks useful and legitimate to the user, who is usually tricked into installing it, but instead of performing the function it describes, it allows access to the user's computer system. Such malware can be really annoying and can change the settings of the system, displaying uncontrollable pop-ups, advertisements or toolbars in the web browser.