From viruses to spyware, we break down the key differences so you know exactly what you're dealing with.

The computer worm responsible for the biggest attack in years has infected at least one out of every 16 PCs worldwide, a security company said today, and it may have managed to compromise as many as ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Updated December 13 with news of a zero-day exploit that ...