NIST SP 800-53: Security and Privacy Controls Guide

NIST Special Publication 800-53 is the most comprehensive catalogue of security and privacy controls available. With over 1,000 controls organized into 20 families, it serves as the control baseline for U.S. federal information systems and provides a rich reference for any organization seeking rigorous security.

What NIST 800-53 Covers

The publication defines controls across 20 families covering every aspect of information security and privacy: Access Control, Awareness and Training, Audit and Accountability, Assessment and Authorization, Configuration Management, Contingency Planning, Identification and Authentication, Incident Response, Maintenance, Media Protection, Physical and Environmental Protection, Planning, Program Management, Personnel Security, Risk Assessment, System and Services Acquisition, System and Communications Protection, System and Information Integrity, Supply Chain Risk Management, and PII Processing and Transparency.

Revision 5 unified security and privacy controls into a single catalogue, making it easier to address both concerns holistically.

Who Needs NIST 800-53

Federal agencies are required to implement NIST 800-53 controls under FISMA. Federal contractors and cloud service providers seeking FedRAMP authorization must also comply. Beyond government, organizations in critical infrastructure, defense, and highly regulated industries use 800-53 as their primary control framework.

Control Baselines

NIST 800-53 defines three control baselines based on system impact level:

• Low — Approximately 130 controls for systems where loss would have limited adverse effect
• Moderate — Approximately 260 controls for systems where loss would have serious adverse effect
• High — Approximately 350+ controls for systems where loss would have severe or catastrophic effect

Organizations select their baseline through FIPS 199 system categorization, then tailor it by adding or removing controls based on specific risk factors.

Implementation Strategy

1. Categorize — Determine system impact level using FIPS 199
2. Select baseline — Choose Low, Moderate, or High control baseline
3. Tailor — Adjust the baseline with scoping guidance, compensating controls, and organization-defined parameters
4. Implement — Deploy selected controls across people, processes, and technology
5. Assess — Verify control effectiveness through testing
6. Authorize — Obtain authorization to operate from the authorizing official
7. Monitor — Continuously monitor control effectiveness and report changes