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.

Four hours. That's how long it took for a glamorous tennis player to become the talk of the Net, for countless companies to shut down their e-mail gateways, and for a new virus to spread across the ...

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 ...