Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Projects Protecting CUI

Protecting Controlled Unclassified Information CUI

Publications

The following NIST-authored publications are directly related to this project.

Series & Number Title Status Released
SP 800-172 Rev. 3 Enhanced Security Requirements for Protecting Controlled Unclassified Information Final 05/13/2026
SP 800-172A Rev. 3 Assessing Enhanced Security Requirements for Controlled Unclassified Information Final 05/13/2026
SP 1318 Protecting Controlled Unclassified Information (CUI): NIST Special Publication 800-171, Revision 3. Small Business Primer Final 08/18/2025
SP 800-171 Rev. 3 Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations Final 05/14/2024
SP 800-171A Rev. 3 Assessing Security Requirements for Controlled Unclassified Information Final 05/14/2024
ITL Bulletin Assessing Implementation of Controlled Unclassified Information (CUI) Security Requirements Final 07/26/2018
ITL Bulletin Protection of Controlled Unclassified Information Final 10/19/2015

Contacts

Send Protecting CUI Inquiries to: [email protected]

Victoria Pillitteri - NIST

Topics

Security and Privacy: risk management

Created June 13, 2019, Updated June 09, 2026