摘要: Worms have always been mentioned within the context of malware; indeed, media has referred to these self-replicating and self-propagating network programs as malicious. But there is another side worms, in which its distinctive features can be utilised protect - rather than damage enterprise networks. In this paper, we discuss very controversial topic shed some light on history, philosophy, features, definitions, design guidelines, distinguish between malicious defensive worms an attempt break common negative conception usually held towards computer worms.