What is computer virus

Computer viruses do not spontaneously generate: They must be written and have a specific purpose.A benign virus is one that is designed to do no real damage to your computer.In addition, Macintosh viruses don't infect DOS-based computer software and vice versa.Resident virus having come in operation memory of computer doesn’t infect memory.It helps new types of computer viruses to appear.This paper is about the classification of computer viruses.Types of Computer Viruses.What Viruses Do.What Viruses Don't Do.The paper: Types of computer viruses.