Which SCI control system is designed to protect human intelligence?

• A. HCS (HCS)
• B. CSS
• C. TEMPEST
• D. INFOSEC

Answer: (A)

Protecting human intelligence requires a control system that specifically guards the people, sources, and methods involved in HUMINT. The Human Intelligence Control System is built to isolate and safeguard HUMINT-related information, ensuring only authorized personnel with a verified need-to-know and appropriate clearance can access sources, contacts, operational techniques, and reporting channels. It manages how HUMINT materials are stored, transmitted, and shared within SCI, maintaining compartmentalization across the intelligence activities.

Other systems address different security domains: CSS focuses on protecting communications and cryptographic data, TEMPEST mitigates the risk of leakage through unintended electromagnetic emissions, and INFOSEC covers broader information security practices. For safeguarding human intelligence specifically, the HCS is the best fit because it targets the unique risks associated with human sources and HUMINT operations.