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Enhanced Security Requirements for Protecting Controlled Unclassified Information

51 The protection of Controlled Unclassified Information (CUI) resident in nonfederal systems and 52 organizations is of paramount importance to federal agencies and can directly impact the ability 53 of the Federal Government to successfully conduct its essential missions and functions. This 54 publication provides federal agencies with recommended enhanced security requirements for 55 protecting the confidentiality of CUI: (1) when the information is resident in nonfederal systems 56 and organizations; (2) when the nonfederal organization is not collecting or maintaining 57 information on behalf of a federal agency or using or operating a system on behalf of an agency; 58 and (3) where there are no specific safeguarding requirements for protecting the confidentiality 59 of CUI prescribed by the authorizing law, regulation, or government-wide policy for the CUI 60 category listed in the CUI Registry. The enhanced requirements apply only to components of 61 nonfederal systems that process, store, or transmit CUI or that provide security protection for 62 such components when the designated CUI is associated with a critical program or high value 63 asset. The enhanced requirements supplement the basic and derived security requirements in 64 NIST Special Publication 800-171 and are intended for use by federal agencies in contractual 65 vehicles or other agreements established between those agencies and nonfederal organizations. 66