Computers under Attack

            It is said that computer viruses that cause troubles for any users can be classified into three types. The first type is a Trojan Horse, it is designed to take credit card details or bank - secret word. The second type is a Spyware, it conceals inside a computer to gather data of computer’s owner’s . The final type is a Spam, it is unwanted advertising that some people use it to cheat other people and to take money from them (Philpot, 2011: 47).

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