What does the classification "Secret" indicate regarding information sensitivity?

The classification "Secret" signifies that the information, if disclosed without proper authorization, could cause serious damage to national security. This level of classification is used to protect sensitive information that is crucial for the security and interests of the United States. The implication is that unauthorized access or release of such information could undermine military operations, compromise intelligence sources, or endanger the lives of personnel.

This classification is higher than "Confidential," which denotes information that could cause damage to national security but not as severe as information classified as "Secret." Understanding this hierarchy in classification levels is vital for ensuring the appropriate handling and protection of sensitive information.