Protecting Controlled Unclassified Information (CUI) CUI
Overview
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 800-171A, Assessing Security Requirements for Controlled Unclassified Information, provides assessment procedures and a methodology to conduct assessments of the CUI security requirements in NIST SP 800-171.
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.
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Created June 13, 2019, Updated July 27, 2022
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