NIST Special Publication 800-171, Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations (NIST SP 800-171 or NIST 800-171), provides federal agencies with a set of guidelines designed to ensure that Controlled Unclassified Information (CUI) remains confidential and unchanged in nonfederal systems and organizations.

NIST Special Publication 800-53, Recommended Security Controls for Federal Information Systems and Organizations (NIST SP 800-53 or NIST 800-53), establishes an information security standard for the federal government. Specifically, NIST 800-53 establishes security controls and privacy controls for federal information systems and organizations excluding those involved with national security.