What is virus, Define?

2 Answers

Ray Dart Profile
Ray Dart answered

Michael Oldstone described a virus as "A bit of nucleic acid surrounded by bad news."

For a better (and more scientific) explanation:

A virus is a biological agent that can exist only inside a living cell. It replicates when the cell replicates, or replicates inside the cell. It is not generally considered to be a living thing, despite the presence of genetic material in its make up. There are over 5000 viruses known and a few are damaging to the health of the host.

Gary Davis Profile
Gary Davis answered

A Computer Virus is a malicious software program “Malware” that can infect a computer by modifying or deleting data files, boot sector of a hard disk drive or causes a software program to work in an unexpected manner.

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