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15 Great, Free Security Programs

Turn your PC on, and you're immediately vulnerable to malicious attacks. But you can use these free applications to minimize the dangers and protect yourself.

Preston Gralla

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From the moment you switch on your PC, your system faces countless Internet-borne dangers, including spyware attacks, viruses, Trojan horses, home-page hijackers, and hackers trying to weasel their way into your system. And the Internet isn't the only source of trouble. Anyone with access to your PC can invade your privacy by prying into which Web sites you visit--and learning a great deal more as well.

But fighting back is easy. We've found 15 great pieces of software--firewalls, spyware busters, antivirus software, rootkit killers, and general Internet security tools--designed to protect you against any dangers that come your way. They're free, they're powerful, and they're easy to use. So what are you waiting for? Start downloading.

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