Beginning of Essay
The computer virus is something that has been around almost as long as the Personal Computer (PC) and certainly since the advent of the affordable home computer, but what exactly is a virus? And how does it affect your PC? Is there any way to prevent your hard d ....

Middle of Essay
.... virus resident somewhere in their computer systems. Types of Viruses Under the main heading of viruses are three types of harmful computer programs, not all of which hide and replicate. The first of these is the Trojan Horse programs, the name of which comes from the Greek legend that told how Greek soldiers gained entry to the city of Troy in a giant, hollow wooden horse and thus captured the city, ending the Trojan War. Though not technically a virus it is still dangerous and could cause permanent damage to your operating system. A Trojan Horse program is a program disguised as a game, a utility or an application. When run, a Trojan H ....