How does a computer virus work???

Lets have a look at the working of the computer virus first. The first and foremost thing that people are troubled by while using the internet is a virus. Often we use an antivirus to remove the virus. In order to remove a virus from our system we must find out how a virus works?? Lets find out how a virus in a computer works.

Viruses may be of several types like E-mail viruses, Trojan horses, malwares etc. The virus is a software code which is installed along with the product through which the virus is spread. Once ypu start using the product, i.e you end up double clicking that product the virus becomes active. It gets downloaded to our system. It starts replicating itself thus creating many copies. These copies then spread to various parts of the infected system. Whenever we use an external device such as the pen drive, CD or a floppy drive, the viruses get transferred to those external devices. These viruses then get copied on to the system which uses the infected external device. Sometimes viruses may even enter our system through e-mails. These are called e-mail viruses.