Computer viruses have various names and they are just like pathogenic viruses in medical science. However, the computer virus is a program whereas the pathogenic viruses are not. Millions of computers are affected with virus and damages done by viruses are in terms billions of dollars. In the medical institutions, research institutions, educational institutions, banking institutions, research centers, commercial organizations, desktop publishing companies, government and non-government organizations, etc. the effect of viruses is increasing day by day. In developed countries also the effect of viruses on computers has become a big problem. Some companies are interested in producing Antivirus programs which can remove some viruses. But it is not sure that your computer can still be virus free once it is infected.
Virus is the term used to describe any group of willfully destructive computer programs. The computer viruses destroy the data and computer software. Some computer viruses can damage even the hardware components. The nature of viruses varies. Sometimes, they increase the program size by adding some unnecessary bytes and sometimes they kill some bytes. Thus, their effect cannot be declared unless a particular type is not identified. They dislocate the data, program or destroy vital information resource by ceasing the program components. The viruses possess two major characteristics: they can self replicate and they can transmit themselves to another computer without the knowledge of the user.
A computer virus is a small malicious program written in Assembly language or a system programming language like ‘C’. Its aim is to replicate on computers and cause impediment in the normal functioning of the computer. Viruses differ in their mode of replication and their harmful effects.
The history of virus can be traced to the early 80’s when Gene Burelon, an employee of US security firm placed a virus on the computer network of the firm and managed to destroy 168000 records of database. He lost his job but is still remembered as a pioneer in the virus field. In 1983, Dr Frederick Cohen experimented at the University of Pennsylvania with self replicating code and started to use the term virus.
Virus is the term used to describe any group of willfully destructive computer programs. The computer viruses destroy the data and computer software. Some computer viruses can damage even the hardware components. The nature of viruses varies. Sometimes, they increase the program size by adding some unnecessary bytes and sometimes they kill some bytes. Thus, their effect cannot be declared unless a particular type is not identified. They dislocate the data, program or destroy vital information resource by ceasing the program components. The viruses possess two major characteristics: they can self replicate and they can transmit themselves to another computer without the knowledge of the user.
A computer virus is a small malicious program written in Assembly language or a system programming language like ‘C’. Its aim is to replicate on computers and cause impediment in the normal functioning of the computer. Viruses differ in their mode of replication and their harmful effects.
The history of virus can be traced to the early 80’s when Gene Burelon, an employee of US security firm placed a virus on the computer network of the firm and managed to destroy 168000 records of database. He lost his job but is still remembered as a pioneer in the virus field. In 1983, Dr Frederick Cohen experimented at the University of Pennsylvania with self replicating code and started to use the term virus.
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