Which document establishes requirements for the protection of classified information by contractors?

The National Industrial Security Program Operating Manual (NISPOM) is a critical document that establishes requirements specifically for the protection of classified information by contractors. It provides guidance on safeguarding classified information from unauthorized access or disclosure, ensuring that contractors comply with national security standards.

NISPOM outlines the roles and responsibilities of contractors in securing classified information, detailing the necessary security measures, training, and reporting requirements necessary to maintain the integrity and confidentiality of classified material. This document is essential for any contractor working with the Department of Defense or other government entities that handle sensitive information, ensuring that they are held to the appropriate security standards.

The other options, while important in their respective contexts, do not specifically address the protection of classified information by contractors. The Federal Acquisition Regulation (FAR) primarily governs procurement processes, the System of Records Notice (SORN) deals with the management of personal data within federal systems, and the Privacy Act of 1974 is focused on protecting individual privacy rights rather than establishing protections for classified materials. Thus, NISPOM is the correct choice for addressing the specific requirements for safeguarding classified information in the contractor environment.