A virus, worm or Trojan Horse?
WORLD WIDE WEB - Call a virus a virus, but not when it's a worm or Trojan Horse. Often any destructive code sent over the Web is dubbed a virus. But people who make their living in this arena, differentiate between viruses and what's known as worms and Trojan Horses. Trojan Horse This is one of the simplest forms of destructive coding. It's called a Trojan Horse because on the onset it appears to be either some sort of beneficial or entertaining program. However, true to the true Trojan horse, contained within it is a very destructive code that will either destroy files or give someone access to your system when the so-called good portion of the Trojan Horse program is running. One easy differentiator between a Trojan Horse and the virus and worm, is that the Trojan Horse is the only one that does not self-replicate. Virus A virus got its name because it does in the computer world just what it does in the human body, it takes over normal cells, or files, and uses them to do damage. When a program is infected by a virus, the virus has an opportunity to infect other files in the operating system or desktop environment. Viruses can spread rapidly via transfer of files among users and even via transfer of storage media such as diskettes and CDs. It was once thought that only data files could be hit by viruses, but macro features in popular software products has made macro vulnerable as well. Viruses are also self-replicating. Worm A worm, like a virus, can also be a self-replicating program, but it typically does not alter files. A worm will reside in a PC's memory and duplicate via computer networks.Worms often infiltrate systems through automatic or invisible features of an operating system. Recently a new breed of worm has emerged that self-replicates and resides in memory like older worms, but it also can damage files. -email@example.com