Computers under Attack

   There are three kinds of virus causing disease for any computer user: First, A Trojan Horse. It is created to obtain credit card details or bank passwords. Another, Spyware. It clusters date about the computer's owner. Finally, Spam. It is used for deceiving people and obtaining money from them. (Philpot, 2011:47)
 
Reference: 
               Philpot, S.(2011). Academic Skills. Oxford: Spain