A computer system virus is a kind of harmful code or program that, when performed, replicates itself by customizing other computer system programs and inserting its own code. A computer virus is a sort of harmful code or program that, when executed, reproduces by putting itself right into other computer programs, data documents, or the boot sector of the disk drive. Because of this, virus can spread throughout a network of computer systems and also trigger severe damages.When this duplication is successful, the affected locations are then said to be contaminated with a virus.
https://malwarezero.org/different-types-of-viruses-for-computers-a-beginners-guide/ Viruses frequently spread by creating a copy of themselves on a user's computer system without the user's knowledge or permission. In a lot of cases, viruses will be spread out by email attachments or by files shared on peer-to-peer networks. When an infection has infected a computer, it can infect other computers on the same network.
Some infections are configured to spread themselves in such a way that could trigger serious damage to a computer system. An infection may delete files, fill a difficult drive with ineffective information, or corrupt system files. In many cases, an infection might even show a message or image that is designed to scare the user.
Many viruses are relatively harmless, and only trigger minor annoyance to the user. Some viruses can be very unsafe, and can cause widespread damage to computer systems.