What is one of the main functions of a security classification guide?

The main function of a security classification guide is to specify how classified information is managed. This document serves as an authoritative source for determining the classification level of information and details specific handling procedures, including how to access, store, transmit, and disseminate classified materials. By establishing clear protocols, the guide ensures that sensitive information is properly protected in accordance with established national security policies and directives.

In contrast to outlining penalties for unauthorized disclosure, while such information may be addressed in broader security policies, it does not fall under the primary function of a classification guide. Additionally, public relations efforts are not within the purview of a classification guide, as it is focused solely on the management and protection of classified information rather than external communications. Monitoring compliance with regulations is another important aspect of information security; however, this function is typically the responsibility of compliance officers and does not align with the specific role of a security classification guide, which is centered on classification management.