All Ask Computer and Internet Glossary

Worm

A worm is a malicious computer program that can make copies of itself, hide on your computer and spread over the internet. Worms are unwanted attacks on a computer system and frequently (for instance) delete files, hijack personal data and information, or use your computer system to send spam emails without your knowledge.

Related pages at the All Ask Glossary:

Adware, Anti-Virus, Firewall, HackingSoftware, Spyware, Virus, World Wide Web

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