The National Cyber Awareness System is America's first cohesive national cybersecurity system for identifying, analyzing, and prioritizing emerging vulnerabilities and threats. Managed by the US-CERT, the system relays computer security update and warning information to all users. It provides all citizens—from computer security professionals to home computer users with basic skills—with free, timely, actionable information to better secure their computer systems. The National Cyber Awareness System provides valuable cybersecurity information in the form of Alerts, Tips, and Bulletins.

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The http://www.us-cert.gov website employs adequate security to ensure that the documents stored on the site are safe from viruses. If you require an additional level of security, you can use the mirror site that uses a secure socket layer under the regular HTTP application. That URL is https://www.us-cert.gov.