Living Internet Worms - Types and Habitats. In each case the worm arranges to get a remote command interpreter which it can use to copy over, compile and execute the 99-line bootstrap. The bootstrap sets up its own network connection with the local worm and copies over the other files it needs, and using these pieces a remote worm is built and the infection procedure starts over again.
Worms are viruses that actively help themselves spread.
Worms are viruses that have a self-replication feature enabling them to spread across the net from one computer to another. Worms are interesting for several reasons, because of their mathematical structure and technological complexity, and because they take the imitation of life forms to another step as they search for computers, penetrate them, and then replicate their intelligence to continue the process. A worm can be contained in any kind of virus including boot, program, and script viruses. Sometimes their inventor will release them into the wild in a single copy, leaving them to replicate by themselves through a variety of stratagems and protocols. Different worms use different methods to propagate.