Write an essay on computer virus

Each time the word document program runs, the virus runs too and it has the chance to reproduce by attaching to other programs.

types of computer virus

The Bliss virus never became widespread, and remains chiefly a research curiosity. In the case of polymorphic viruses, however, this decryption module is also modified on each infection.

A few years later, in FebruaryAustralian hackers from the virus-writing crew VLAD created the Bizatch virus also known as "Boza" viruswhich was the first known virus to target Windows This makes it possible to create a file that is of a different type than it appears to the user.

conclusion of computer virus

For example, an executable may be created and named "picture. A better term would be "search strings ".

What is computer virus and its types

Second difference engine After the end of analytical engine in , Babbage designed another difference engine. Just as a biological virus spreads itself from cell to cell and host to host in humans a computer virus spreads from file to file and computer to computer A computer virus hasStruck. If the virus is encrypted with a different key for each infected file, the only part of the virus that remains constant is the decrypting module, which would for example be appended to the end. Some of the adverse effects are slow performance, erratic behavior of PCs, deletion of files, network traffic, and frequent computer crashes [2]. Michael Anthony, In , researchers created and released a virus for Linux—known as " Bliss ". He was advised to take a holiday, which he took, by going to Italy.

In this manner, the virus starts corrupting the whole system. A File Virus is the most common kind of virus.

What is a computer virus and types of virus?

It also has hourly updates of the antivirus. These can be known by alerts generated by antivirus Scan all email attachment before opening them Set up automatic virus scanning in the computer regularly All downloads should be from trusted sites. What makes you cringe? They can also cause redirection of web browsers. COM and. Its creator later posted the source code to Usenet , allowing researchers to see how it worked. If the virus is encrypted with a different key for each infected file, the only part of the virus that remains constant is the decrypting module, which would for example be appended to the end. The word virus itself is Latin for poison. However, due to his health he was forced to retreat to private teaching for some time.
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Computer virus