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    Learn how to help protect your computer from viruses, spyware, and other threats. Use Windows Security Center to check your security status.
    Microsoft Internet Security and Acceleration (ISA) Server integrates firewall and cache features to secure your network and to improve its performance.
    Install security updates and learn about ways that you can stay up to date with information about the latest security issues and updates.
    Learn how to find and change Internet Explorer's security settings. See the descriptions for the different kinds of security zones and how to assign them.
    Learn about features in Internet Explorer that can help protect your privacy and security when shopping or browsing online.
    Learn what an intranet is and how to change intranet security settings.
    Learn how to delete and replace all your Microsoft account security info at once.
    Get started with Microsoft Security Essentials, the free antivirus program from Microsoft, and learn how to scan and clean your PC.

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