NIST SP 800-171 Rev. 3 (Unclassified Info)

Overview

Info

NIST Special Publication 800-171 Revision 3 provides a framework for securing Controlled Unclassified Information (CUI) in nonfederal systems and organizations. It is widely used by contractors and service providers working with U.S. federal agencies.

Published: December 5, 2024
Source: NIST SP 800-171 Rev. 3 – CSRC

Key Implementation Steps

1. Assess the Environment
   Identify where CUI is stored, transmitted, or processed across your systems.

2. Identify Requirements
   Understand the specific security requirements in the standard, organized into 14 control families (e.g., access control, incident response).

3. Develop a System Security Plan (SSP)
   Document how your organization will implement and manage each requirement.

4. Implement Controls
   Deploy technical and organizational safeguards—this includes configuration changes, software tools, and staff training.

5. Conduct a Risk Assessment
   Analyze threats and vulnerabilities to CUI and adjust security measures accordingly.

6. Monitor and Maintain
   Continuously review system performance and security controls to ensure they remain effective.

7. Document Procedures
   Keep up-to-date records of policies, procedures, and controls to support audits and demonstrate compliance.

8. Conduct Regular Reviews
   Periodically re-evaluate and update your security program to maintain alignment with the standard.

Summary

Tip

NIST SP 800-171 Rev. 3 is essential for organizations handling CUI. It promotes a risk-based, documented approach to security, aligned with broader U.S. government compliance requirements.

---