A computer virus is a program which is used for destructive purpose. These programmes are harmful for the computer. These programmes are written in such way that it can enter the computer without the knowledge of the machine or the user.
It interest in the machine thought and infected floppy or a program. The virus cause physical harm to the organization attached,, whereas computer virus does not cause any physical damage to the system :
Some of The Viruses Are As Given Below :-
- (C) Brain
- Charlie
- Ping Pong
- Data Crime
- Dark Avenger
- Whale
- Starship
- Girafe
- One Half
- Macro Virus
Some of The Interesting Viruses Are :-
- Right to left :- want won't allow you to delete a file
- Adam and Eve :- Takes a couple of bytes out of your apple.
- Michael Jackson :- Hard to identify because it constantly changes it's appearance l.
- Airline Virus :- You are in Dallas, your data in Singapore.
- Elvis :- Your computer gets fat, slow and lazy and then self destructs.
Classification of Virus :-
Virus classification on the basis of their mode of existing.
Following are some important categories of viruses:
- Boot sector virus or boot in factor or partition table viruses.
- System infection
- General executable Program
- Infector or file viruses.