Computers under Attack

There are three kinds of virus causing damage for any computers users. One kind is known as a Trojan Horse. It is created to obtain credit card details or bank passwords. Another risky kind of virus is a Spyware. It gathers data about the computer’s owner. A more common, but less dangerous problem is Spam, or unwanted advertising. It traps people and to gets money from them. (Philpot, 2011: P.47)

Reference:

Philpot, S. (2011). Academic Skills. Oxford: Spain