On the Internet's 40th anniversary, Symantec lists the worst cyber threats. Sept. 3, 2009 — -- This fall marks the 40th birthday of the Internet, and to celebrate it, Symantec, the manufacturer ...

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 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, ...