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 ...

NPR's Emily Harris reports on the Code Red software "worm." This new form of virus first infects computers, and then, when it reaches critical mass, uses them to attack specific Web sites. So far, ...

A computer virus is a type of malware that can replicate itself on your computer and spread to other devices. You might be infected with a virus if your computer suddenly starts running more slowly, ...