Trojan Horses A Trojan horse closely resembles a virus, but is actually in a category of its own.The Trojan horse is often referred to as the most elementary form of maliciouscode.A Trojan horse is used in the same manner as it was in Homer's Iliad; it is seecure program in which malicious code is contained inside of what appears to be harmless data or programming. It is most often disguised as something fun,...... Similar Editorial : Virtumonde Trojan Removal by Jacob A. Erdei. | Source : College Firewalls