Category - Trojan Horse

A Trojan horse is a program that allows a hacker to make changes to a computer. It is generally disguised as a harmless software program and distributed as an e-mail attachment. Once opened the attachment, the Trojan may install itself on a computer without user knowledge or consent. It has the ability to manage files on a computer, including creating, deleting, renaming, viewing, or transferring files.

It may utilize a program manager that allows a hacker to install, execute, open, or close software programs. The hacker may have the ability to gain control of a user's mouse and keyboard, and may even send spam by sending mass e-mails from an infected computer. They have the ability to run in the background, hiding their presence.

Worst case scenario: A third party may gain access to an entire network and perform malicious actions the author has designed it to do.