With the evolution of the Internet, the big kid in class who used to steal your lunch money has evolved into a new kind of bully -- one who hacks your e-mail, sends you threatening messages and sabotages your computer.
When hackers take over computers to do their Internet bidding, they create zombie computers. Allegedly, one hacker under investigation used a single computer to control a network of more than 1.5 million zombie computers.
In "Live Free or Die Hard," Detective John McLane fights a group that carries out attacks using the Internet. Is it really possible for hackers to cause economic or physical devastation in the United States?
Logic bombs can cripple a company's computer system and either reveal or destroy sensitive information. It's often a tool used by angry employees -- in the IT world, it has a reputation of being associated with "disgruntled employee syndrome."
Most people associate phishing with e-mail messages imitating banks or other businesses in an attempt to scam victims into revealing personal information. But e-mail messages are only one small piece of a phishing scam.
According to recent estimates, more than two-thirds of all PCs are infected with some kind of spyware. These programs track your Web habits and more. Is your computer doomed, or can you get rid of spyware?