Computer security technologists are racing to find ways to block ever-more complex computer worms and viruses that burrow into computers -- usually via e-mail -- and wreak havoc on network systems.

A computer worm is a type of malware that, once it infects a machine, can automatically copy and extend itself to connected devices. A worm is very similar to a virus, and you can get infected by one ...

A worm is a form of malware (malicious software) that operates as a self-contained application and can transfer and copy itself from computer to computer. It’s this ability to operate autonomously, ...