How To Protect Your Computer Against A Trojan Horse

How can I protect myself against a Trojan horse?

To protect yourself against a Trojan horse, treat it like a virus. Have some kind of software that alerts you to any kind of installation that's happening on your computer so that you can decide whether or not that's a familiar installation or something that you are unsure of. If you're unsure of it, do not allow it to happen. A lot of times these Trojan horses cannot be undone.