Computers under Attack
Something that conceals itself in a computer program and causes the data to be destroyed is called a virus. The computer virus can be classified into three types. The first virus type that was created in order to extract information about the account or a credit card is a Trojan horse. The second type that keeps data of the owner of the computer is a Spyware. The final virus type is appeared through advertisements, and make a trouble is a Spam (Philpot, 2011: 47).
References: Philpot, S. (2011). “Computers under Attack.” Academic Skills.
Oxford: Spain
