Saturday, December 22, 2012

Difference between Virus and Worm

Viruses and worms are characterized by the ability to make and spread copies of themselves. 

The difference between them is that a worm is a complete program that replicates itself, while a virus is a bit of code that is inserted (and inserts copies of itself) into another piece of software or a file, so that it is executed as part of the execution of that piece of software or as a result of opening the file.

Viruses requires the spreading of an infected host file, while worms are programs that replicate themselves from system to system without the use of a host file. 

Worms spread more rapidly than viruses. Worms consumes too much system memory or network bandwidth. 

Examples of Virus: Michelangelo, I LOVE YOU, Melissa etc.

Examples of Worms: Blaster Worm - this worm allows malicious users to control your computer remotely.

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