Computer under Attack

            It is said that the computer virus that can be troublesome for any users are classified into three types. The first type of virus is a Trojan Horse that takes credit card details or bank-secret word. The second type is a Spyware, it conceals within the computer and catches information of the computer owners. The last dangerous virus type is a Spam, it is undesirable advertising which some people use to cheat another people and to take money from them (Philpot, 2011: 47).

Reference :

            Philpot, S. (2011). “Computer under Attack.” Academic Skills. Oxford: Spain