The concept of "revealed by" includes which of the following?

The concept of "revealed by" pertains to information that may not explicitly state classified content but effectively discloses it through analysis or interpretation of existing classified material. When classified information is deduced through additional analysis, it indicates that while the specific details may not be directly stated, the underlying classified information can still be understood or inferred from what is available. This is important in derivative classification because it emphasizes the responsibility of individuals to recognize when new interpretations or analyses of existing information could unintentionally reveal classified content.

In contrast, other options do not align with the definition of "revealed by." For example, mandatory classification reviews are procedures designed to assess the classification status of information, not instances of revealing classified information. Unauthorized access pertains to breaches of security protocols; while it certainly poses a risk, it does not relate to the concept of revealing classified information through analysis. Concealing classified information refers to the actions taken to protect that information rather than instances of revealing it. Understanding these nuances is crucial for proper derivative classification practices.