What Are Viruses and Anti-virus Programs?
A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are man-made and they can also replicate themselves by making a copy of themselves over and over again. Even such a simple virus is dangerous, because it will quickly use all available memory and bring the system to a halt. An even more dangerous type of virus is one capable of transmitting itself across networks and bypassing security systems. When people talk about a computer virus, they generally call different types of computer viruses, like worms or Trojan horses a “virus”. While the words (Trojan, worm and virus) are often used interchangeably, they are technically not the same. However, what they have in common is that they all are malicious programs that can cause damage to your computer. They also can be found and removed by the same security program (for the purpose of this article, we also use the word virus to describe al
