Virus

Viruses replicate on the resources of the local machine.

Unlike worms, viruses do not use network services to propagate or penetrate other computers. A copy of a virus will reach remote computers only if the infected object is, for some reason unrelated to the virus function, activated on another computer. For example:

when infecting accessible disks, a virus penetrates a file located on a network resource
a virus copies itself to a removable storage device or infects a file on a removable device
a user sends an email with an infected attachment.

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• Worm
• Net-Worm
• Email-Worm
• IM-Worm
• IRC-Worm
• P2P-Worm