Information Security Oversight Office (ISOO)

Frequently Asked Questions

New to ISOO? This page contains answers to some of the questions most frequently asked by security professionals. If you have a question that is not listed here please visit our individual programs or Contact Us.

Guidance listed on this page pertains only to Federal agencies and applicable contractors and is binding on agency actions as required by law and similar authority. The guidance does not apply to, and is not meant to bind, the public, except as authorized by law or regulation or as incorporated into a contract.

Select the respective title for link to learn about a specific element of E.O. 13526 and 32 CFR Part 2001
E.O. 13526 and 32 CFR Part 2001 General Questions about definitions and policy	Original Classification Authority (OCA) and Derivative Classification Addresses common concerns regarding OCA and Derivative Classifiers
GSA Containers Provides additional information on GSA guidance and GSA-Approved Containers	Express Carriers and National Security System Discusses different methods for mailing
Marking Describes common questions about marking classified documents in various formats	Industrial Security approved carriers Questions about Industrial Security carriers
Declassification Provides additional information on Declassification instructions and Exemptions	National Declassification Center (NDC) Questions regarding the NDC