Measures that protect sensitive information which might be derived from unclassified sources define which security concept?

Measures that protect sensitive information which might be derived from unclassified sources define which security concept?

• A. Operational Security
• B. Emission Security
• C. Physical Security
• D. Transmission Security

Answer: (A)

Operational Security is the practice of protecting sensitive information that could be inferred from unclassified sources by examining how everyday actions, routines, and openly available data might reveal critical details. It starts with identifying what information could be sensitive, then analyzing how an adversary might learn it from normal activities or unclassified materials, and finally applying countermeasures to reduce those clues or indicators. In this sense, the focus is on preventing useful inferences rather than on encrypting data or guarding physical assets. Emissions security deals with reducing information leakage from electronic or other unintended emissions, while transmission security protects data as it travels, and physical security covers safeguarding facilities and hardware. The scenario described—protecting information that could be derived from unclassified sources—fits OPSEC best because it centers on preventing inference from routine, nonclassified information.

Operational Security is the practice of protecting sensitive information that could be inferred from unclassified sources by examining how everyday actions, routines, and openly available data might reveal critical details. It starts with identifying what information could be sensitive, then analyzing how an adversary might learn it from normal activities or unclassified materials, and finally applying countermeasures to reduce those clues or indicators. In this sense, the focus is on preventing useful inferences rather than on encrypting data or guarding physical assets.

Emissions security deals with reducing information leakage from electronic or other unintended emissions, while transmission security protects data as it travels, and physical security covers safeguarding facilities and hardware. The scenario described—protecting information that could be derived from unclassified sources—fits OPSEC best because it centers on preventing inference from routine, nonclassified information.