Question

what is a computer virus

Answer 1

infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.and harm the computer

Answer 2

I am not going for defination because you can find it anywhere on net just like viruses.

Virus = It is a type of program that executes without your permission and can access thing that are vulnerable and even if you know any programming language well then you can create one of your own.