Viruses are called that because
Viruses are called that because They can copy themselve and spread.
Worms spread from computer to computer, but unlike a virus, it has the capability to travel without any help from a person. ... A Trojan horse is not a virus. It is a destructive program that looks as a genuine application. Unlike viruses, Trojan horses do not replicate themselves but they can be just as destructive.
What are malware, viruses, Spyware, and cookies, and what differentiates them ? "Malware" is short for malicious software and used as a single term to refer to virus, spy ware, worm etc. ... So wherever a malware term is used it means a program which is designed to damage your computer it may be a virus, worm or Trojan.