A bug is a type of malicious code or program that, when executed, replicates itself by modifying other computer system programs and inserting its own code. When this duplication prospers, the impacted locations are then said to be contaminated with a virus.
Viruses often spread out by creating a copy of themselves on a user's computer system without the user's understanding or permission. In most cases, infections will be spread out by e-mail accessories or by files shared on peer-to-peer networks. As soon as an infection has actually contaminated a computer, it can spread to other computer systems on the same network.
Some viruses are configured to spread themselves in such a way that might cause serious damage to a computer system. visit For example, an infection may erase files, fill a disk drive with worthless data, or corrupt system files. In some cases, a virus might even display a message or image that is designed to frighten the user.
Most viruses are fairly safe, and just trigger minor annoyance to the user. Some infections can be extremely hazardous, and can cause prevalent damage to computer systems.