What is a computer virus and what does it do?
A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions.
Like other types of malware, a virus is created to damage or take control of a computer. It gets its name from the method by which it infects the user’s computer. A simple way to think of a virus is to look at it like the flu, it needs to hijack a cell to do that work for it, wreaking havoc on the infected organism in the process. This is the same for the computer virus.
How does a computer virus operate?
Viruses operate in two ways. 1: as soon as it lands on a new computer it begins to replicate itself. 2: It is inactive until it is triggered. This is why it is very imported to have a good Anti-virus program installed.
Types of Computer Viruses
A computer virus is one type of malware that inserts its virus code to multiply itself by altering the programs and applications. The computer gets infected through the replication of malicious code. Computer viruses come in different forms to infect the system in different ways. Some of the most common viruses are,
- Boot Sector Virus
- Direct Action Virus
- Resident Virus
- Multipartite Virus
- Polymorphic Virus
- Overwrite Virus
- Spacefiller Virus