Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Standards for Security Categorization of Federal Information and Information Systems



Ronald S. Ross, Marianne M. Swanson


The purpose of this document is to provide a standard for categorizing federal information and information systems according to an agency's level of concern for confidentiality, integrity, and availability and the potential impact on agency assets and operations should their information and information systems be compromised through unauthorized access, use, disclosure, disruption, modification, or destruction.
Federal Inf. Process. Stds. (NIST FIPS) - 199
Report Number


classification, Federal information, Federal information systems, FIPS, security
Created February 1, 2004, Updated November 10, 2018