Defence system modelling against computer worms

As computer networks become prevalent, the Internet has been a battlefield for attackers and defenders. One of the most powerful weapons for attackers is the computer worm. Computer worms are a self-propagating computer program that is being increasingly and widely used to attack the Internet. Because they spread extremely fast and usually install malicious code, computer worms are so dangerous.This thesis begins with definition, history and taxonomy. Also, it defines the structure and components of worms. It develops a life cycle model of worm defence, including prevention, prediction, detection and mitigation. It also discusses in detail about each of these techniques. It explains detection and defense techniques against to the computer worms. Group based model have been developed and discussed with the simulations results. It concludes that computer worms are dangerous but there are ways and means to mitigate their ill effects.