DoDI Instruction 5200.48 – Controlled Unclassified Information (CUI)
3.8 3.8.4 Media Protection
https://www.esd.whs.mil/Portals/54/Documents/DD/issuances/dodi/520048p.PDF
In accordance with the authority in DoD Directive (DoDD) 5143.01 and the December 22, 2010 Deputy Secretary of Defense Memorandum, this issuance: •Establishes policy, assigns responsibilities, and prescribes procedures for CUI throughout the DoD in accordance with Executive Order (E.O.) 13556; Part 2002 of Title 32, Code of Federal Regulations (CFR); and Defense Federal Acquisition Regulation Supplement (DFARS) Sections 252.204-7008 and 252.204-7012. •Establishes the official DoD CUI Registry.
https://www.archives.gov/files/cui/20161206-cui-marking-handbook-v1-1.pdf
This handbook provides examples of correctly marking Controlled Unclassified Information (CUI).
https://www.archives.gov/cui/additional-tools
This link from the National Archives provides additional resources to assist with marking CUI.
https://www.archives.gov/cui/training.html
This link from the National Archives provides training videos for marking CUI.
https://isoo.blogs.archives.gov/category/marking-examples/
This blog provides examples of correctly marking Controlled Unclassified Information (CUI) and forms for purchase.
