Controlled Unclassified Information (CUI)

CUI Registry: Critical Infrastructure-Chemical-terrorism Vulnerability Information


Category-Subcategory: Critical Infrastructure-Chemical-terrorism Vulnerability Information
Category Description:

Systems and assets, whether physical or virtual, so vital that the incapacity or destruction of such may have a debilitating impact on the security, economy, public health or safety, environment, or any combination of these matters, across any Federal, State, regional, territorial, or local jurisdiction.

Subcategory Description: In accordance with Section 550(c) of the Department of Homeland Security Appropriations Act of 2007, the following information, whether transmitted verbally, electronically, or in written form, shall constitute CVI, see (1) - (9).
Marking: CVI


  • CUI Specified authorities include specific handling practices that differ from general CUI requirements. For Specified authorities, reference individual Safeguarding/Dissemination control citations for distinct requirements
  • Whether CUI is Basic or Specified is determined by the applicable Safeguarding and/or Dissemination Authority for that CUI.
  • Each "Safeguarding and/or Dissemination Authority" citation links to the statute, regulation or government-wide policy authorizing the control of that information as CUI.
  • Each "Sanctions" authority links to the statute, regulation or government-wide policy that includes penalties for CUI misuse of CUI for the associated "Safeguarding and/or Dissemination Authority" on the same line.

Safeguarding and/or Dissemination Authority Basic or
6 USC 121 note Basic 6 CFR 27.400(j)
6 CFR 27 Specified 6 CFR 27.400(j)



Authority links are updated based on regular re-publication of the United States Code and Code of Federal Regulations, and the CUI Registry maintenance schedule.