This is the Department of Defense’s instruction to DoD Employees.

This printing of this DoD manual provides instructions to implement policy, assign responsibilities, and provide procedures for the designation, marking, protection, and dissemination of controlled unclassified information (CUI) and classified information, including information categorized as collateral, sensitive compartmented information (SCI), and Special Access Program (SAP).

• Overview, Classification and Declassification
• Marking Classified Information
• Protection of Classified Information

These books are part of a three volume which together create a valuable resource to be used in preparation of the Security Professional Education Development (SPēD) certifications.

• Security Fundamentals Professional Certification (SFPC)
• Security Asset Protection Professional Certification (SAPPC)
• Physical Security Certification (PSC)
• Industrial Security Oversight Certification (ISOC)