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Protecting Controlled Unclassified Information (CUI) in nonfederal systems and organizations is critical to federal agencies. The suite of guidance (NIST Special Publication (SP) 800-171, SP 800-171A, SP 800-172, and SP 800-172A) focuses on protecting the confidentiality of CUI and recommends specific security requirements to achieve that objective.
NIST SP 800-171, Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations, provides a set of recommended security requirements for protecting the confidentiality of CUI.
NIST SP 800-172, Enhanced Security Requirements for Protecting Controlled Unclassified Information: A Supplement to NIST Special Publication 800-171, provides enhanced security requirements to help protect CUI associated with critical programs or high value assets in nonfederal systems and organizations from the advanced persistent threat (APT).
NIST SP 800-172A, Assessing Enhanced Security Requirements for Controlled Unclassified Information, provides assessment procedures and a methodology to conduct assessments of the enhanced security requirements in NIST SP 800-172.
Security and Privacy: risk management