Computers under Attack

There are three kinds of virus that cause problem for people who use the computer; Trojan Horse, Spyware, and Spam. Firstly, a Trojan Horse gets credit card feature or bank password. Secondly, a Spyware obscures inside a computer and gathers the data. Finally, a Spam tricks and takes money from people (Philpot, 2011:47).

Reference: Philpot, S. (2011). "Computers under Attack." Academic Skills. Oxford: Spain