Introduction

You may have computers. While working with computers you may note several bad things happening in your computer. You may found that your .exe files are losing, word document is displaying unnecessary messages, your internet bandwidth becoming narrower, alert symbol in the system tray etc. When you ask your colleagues about this problem they have only one answer-“VIRUS”.

Now let us browse in to the world of virus…….

What is a virus?

A virus is an executable file that is capable of replicating (copying itself). The viruses are programmed for destructive purposes like deleting files and data, reducing the bandwidth of the network medium etc. The size of most of the virus is in KB. This shows that the most of the virus were made by the brilliant programmers. Viruses are of different types and forms. They can latch to other files like .exe, .com etc. They have the capability to spread through the removable media like floppy disk, CDs, flash drives etc. Some have the capability to spread through the network. Most of the viruses are programmed in assembly language that results in its reduced size.