What are the main categories of classified information?

The main categories of classified information are Confidential, Secret, and Top Secret. This classification system is used by the United States government to designate varying levels of sensitivity regarding national security.

Confidential information requires protection because its unauthorized disclosure could cause damage to national security. Secret information is of greater sensitivity; unauthorized access could cause serious damage to national security. Top Secret is the highest level of classification, where disclosure could cause exceptionally grave damage to national security.

This structure is critical for managing access to sensitive information and ensuring that only individuals with the appropriate clearance can handle information pertinent to national security interests. Understanding these categories helps Facility Security Officers (FSOs) implement proper security measures and make informed decisions regarding information handling and personnel management.