What is a requirement for information classified as Top Secret?

Information classified as Top Secret is considered to have the highest level of sensitivity and potential impact on national security. The defining requirement is that its unauthorized disclosure could cause grave damage to national security. This classification is reserved for information that, if exposed, could severely harm the interests of the nation, including its ability to defend itself, conduct foreign relations, or carry out essential governmental functions.

The distinction in classification levels, such as Top Secret, Secret, and Confidential, is based on the degree of harm that could result from the disclosure of that information. Top Secret requires a higher threshold of risk compared to lower classifications. For example, while other classifications may involve less severe consequences, Top Secret is specifically about grave damage, making it of utmost concern and subject to stringent controls and protections.

The focus is on the potential national security implications rather than lesser concerns like embarrassment or physical harm, which are associated with other classifications. Additionally, the frequency of scrutiny is a procedural requirement for maintaining classified information, but it is not the defining characteristic of Top Secret classification.