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> Chapter 21 - Security Profiles > AntiVirus > Antivirus concepts > Worms

Worms

A worm is a piece of standalone computer code that replicates itself in order to spread to other computers. It normally uses a computer network to spread itself, using security vulnerabilities on the target computer or network to propagate. Unlike a virus, it does not attach itself to an existing file. Even is there is no payload, worms consume resources such as bandwidth and storage space just through their act of replication.