Your home computer is a popular target for intruders. Why Because intruders want what you've stored there. They look for credit card numbers, bank account information, and anything else they can find.

But it's not just money-related information they're after. Intruders also want your computer's resources, meaning your hard disk space, your fast processor, and your Internet connection.

They use these resources to attack other computers on the Internet. In fact, the more computers an intruder uses, the harder it is for law enforcement to figure out where the attack is really coming from. If intruders can't be found, they can't be stopped, and they can't be prosecuted.

The next section discusses concepts you need to know, to keep this intruders away!