Which instruction governs the security of classified information?

The instruction that governs the security of classified information is SECNAVINST 5510.36. This instruction provides comprehensive guidelines for the classification, safeguarding, and declassification of sensitive information within the Department of the Navy. It outlines responsibilities for personnel, requires proper handling and storage of classified materials, and establishes protocols for access to classified information.

Understanding classified information security is crucial for maintaining national security and protecting sensitive data from unauthorized disclosure. The policies set forth in SECNAVINST 5510.36 help ensure that all personnel handling classified information are trained and aware of their responsibilities, thereby reducing the risk of security breaches.

In contrast, the other options focus on different areas. OPNAVINST 5239.1 pertains to information technology security, BUPERSINST 1430.16 deals with advancements within the Navy, and NAVPERS 1070/600 is a form used for Enlisted Performance Evaluations, none of which govern the security of classified information specifically.