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NIST SP 800-171 Rev. 3

Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations

Date Published: May 2024

Supersedes: SP 800-171 Rev. 2 (01/28/2021)


Ron Ross (NIST), Victoria Pillitteri (NIST)



Controlled Unclassified Information; Executive Order 13556; FIPS Publication 199; FIPS Publication 200; FISMA; NIST Special Publication 800-53; nonfederal organizations; nonfederal systems; organization-defined parameter; security assessment; security control; security requirement
Control Families

Access Control; Awareness and Training; Audit and Accountability; Assessment, Authorization and Monitoring; Configuration Management; Identification and Authentication; Incident Response; Maintenance; Media Protection; Physical and Environmental Protection; Planning; Personnel Security; Risk Assessment; System and Services Acquisition; System and Communications Protection; System and Information Integrity; Supply Chain Risk Management