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2 Know about Computer Viruses
Your Aim
to learn about:
What is a Computer Virus?
How does a Computer get Infected with Virus?
How do you know your PC has a Virus?
How to Prevent from a Virus?
Antivirus Software
You must have heard of viral fever. When we have
this fever, our body is attacked and infected by
viruses. Similarly, a computer may also be attacked
by viruses that can destroy the programs and files
saved in the computer. Such programs are known
as computer viruses.
WHAT IS A COMPUTER VIRUS?
A computer virus is a program. This program can infect a system and quickly
duplicate itself. The user of a computer may not even realise that the computer
is affected. Viruses normally infect just one computer, however, if that computer
is part of a network, the computer virus may spread to other systems much like a
human virus which transmits from one person to another. Some popular viruses
are Code Red, MYDoom and Melissa.
Harms Caused by Computer Viruses
Different viruses will affect your computer in different ways.
They can crash your hard disk.
They can destroy all or some of your data.
They decrease the processing speed of the computer.
Know About Computer Viruses 17

