SC-51—Hardware-Based Protection
>Control Description
a
Employ hardware-based, write-protect for ⚙organization-defined system firmware components; and
b
Implement specific procedures for ⚙organization-defined authorized individuals to manually disable hardware write-protect for firmware modifications and re-enable the write-protect prior to returning to operational mode.
>Cross-Framework Mappings
NIST CSF 2.0
via NIST CSF 2.0 Concept Crosswalk>Supplemental Guidance
None.
>Assessment Interview Topics
Questions assessors commonly ask
Process & Governance:
- •What policies govern the implementation of hardware-based protection?
- •How are system and communications protection requirements defined and maintained?
- •Who is responsible for configuring and maintaining the security controls specified in SC-51?
Technical Implementation:
- •How is hardware-based protection technically implemented in your environment?
- •What systems, tools, or configurations enforce this protection requirement?
- •How do you ensure that hardware-based protection remains effective as the system evolves?
Evidence & Documentation:
- •What documentation demonstrates the implementation of SC-51?
- •Can you provide configuration evidence or system diagrams showing this protection control?
- •What logs or monitoring data verify that this control is functioning correctly?
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