Information Security Oversight Office (ISOO)

Education and Training Materials

Security education plays a critical role in the effectiveness of an agency's information security program. The Information Security Oversight Office (ISOO) continues to explore ways to coordinate the dissemination of as many security education aids as possible and to develop them within the context of budgetary considerations. Below are Security, Classification Management, CUI, Markings, and Industry training aids.

ISOO Annual Open House

Marking Handbooks

Marking CNSI Booklet revision 2018
Marking Classified National Security Information (Updated January 2018)

ISOO has issued a Marking Handbook to reflect updates in marking procedures for classified national security information resulting from the issuance of Executive Order 13526 and 32 CFR Parts 2001 and 2003.  

Marking Controlled Unclassified Information(Version 1.1 – December 6, 2016)

ISOO has issued a Marking Handbook to reflect marking procedures for controlled unclassified information. For more information please visit CUI Policy and guidance:

 Supplemental Training Aids on Classification Management and Marking Documents

Outside Training

Courses on security training, derivative classification, and other professional certifications.

Center for Development of Security Excellence (CDSE) Provides a center of excellence for security training, professionalization, education, certification, research, and multimedia for the security community.  For more information please visit:  Center for Development of Security Excellence