NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
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.
Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations
Published
Author(s)
Ronald S. Ross, Victoria Yan Pillitteri
Abstract
The protection of Controlled Unclassified Information (CUI) is of paramount importance to federal agencies and can directly impact the ability of the Federal Government to successfully conduct its essential missions and functions. This publication provides federal agencies with recommended security requirements for protecting the confidentiality of CUI when the information is resident in nonfederal systems and organizations. The requirements apply to components of nonfederal systems that process, store, or transmit CUI or that provide protection for such components. The security requirements are intended for use by federal agencies in contractual vehicles or other agreements established between those agencies and nonfederal organizations. This publication can be used in conjunction with its companion publication, NIST SP 800-171A, which provides a comprehensive set of procedures to assess the security requirements.
Ross, R.
and Pillitteri, V.
(2024),
Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.800-171r3, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957840
(Accessed October 6, 2025)