Where are the National Industrial Security Program (NISP) requirements, restrictions, and safeguards that cleared industry must follow outlined?

• A. The DCSA Field Office Letters
• B. The NISP Operating Manual (NISPOM)
• C. The DoD Security Instructions
• D. Internal agency guidance

Answer: (B)

The main idea here is that the NISPOM sets the official rules for how cleared industry must protect classified information. It is the standard reference that outlines the requirements, restrictions, and safeguards contractors must follow, covering how to handle and safeguard classified material, the physical and information security controls, personnel security processes, and the procedures for reporting incidents or breaches. This manual is issued to provide a consistent baseline across all contractors working under the National Industrial Security Program, ensuring uniform practices nationwide. While field office letters, DoD security instructions, or internal agency guidance can provide updates or clarifications, they do not replace the comprehensive, mandatory requirements found in the NISPOM.