Question

what is computer virus List any three harm caused by computer virus .
​

Answer 1

Answer:

A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions.

Boot Sector Virus – This type of virus infects the master boot record and it is challenging and a complex task to remove this virus and often requires the system to be formatted. Mostly it spreads through removable media.

Direct Action Virus – This is also called non-resident virus, it gets installed or stays hidden in the computer memory. It stays attached to the specific type of files that it infect. It does not affect the user experience and system’s performance.

Resident Virus – Unlike direct action viruses, resident viruses get installed on the computer. It is difficult to identify the virus and it is even difficult to remove a resident virus.

Answer 2

A Computer viruses is a destructive software Program. All Computer Viruses are Man-made. These can Spread from one Computer to another through disks, networks, e-mails links, etc.

Harm Cause by Computer Virus:

1. Stealing passwords or data

2. logging keystrokes

3. corrupting files.. etc.