Question

why are viruses harmful?​

Answer 1

Answer:

The more harmful viruses are described as virulent. Viruses cause different diseases depending on the types of cell that they infect. Some viruses can cause lifelong or chronic infections where the viruses continue to reproduce in the body despite the host's defence mechanisms.

Answer 2

Answer:

A Computer virus is destructive software created to harm a computer and damage it's contents. it is a parasite in form of a program that enters a computer, interferes with its working and destroys the files and other programs in the system. It attaches itself to a computer operating or other programs, and destroys the data contained in it without the knowledge of the user.