Authentication
Authentication is the action of identifying your digital identity. Get educated on passwords, encryption keys, facial recognition and fingerprint scanners. See more »
what's inside: computer security systems channel
Computer security is an increasingly important consideration. From authentication to encryption keys, learn how to keep your computer's hard drive protected and your personal information safe.
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Computer & Internet Security
Computer surveillance and security covers a wide range of ways to keep you and your information safe. Learn about firewalls, zombie computers, hackers and workplace surveillance. See more »
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featured articles
How Trojan Horses Work
We all get spam e-mail messages that tell us to follow a link. But that link could download a Trojan horse. What is it, and how is it different from a virus?
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videos: computer security
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How Firewalls Work
Firewalls have helped protect computers in large companies for years. Now they're a critical component of home networks as well. What are they protecting you from?
How Computer Forensics Works
Computer forensics searches, preserves and analyzes information on computer systems for potential evidence in a trial.
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