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.

Despite worms such as Sasser, Bobax and Wallon wrecking havoc throughout May, security vendor Trend Micro says it detected fewer examples of new malicious coding last month than it did in April. Trend ...

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 ...