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SC-34(2)—Integrity Protection On Read-Only Media

>Control Description

Protect the integrity of information prior to storage on read-only media and control the media after such information has been recorded onto the media.

>Supplemental Guidance

Controls prevent the substitution of media into systems or the reprogramming of programmable read-only media prior to installation into the systems. Integrity protection controls include a combination of prevention, detection, and response.

>Related Controls

CM-3
CM-5
CM-9
MP-2
MP-4
MP-5
SC-28
SI-3

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • •What policies govern the implementation of integrity protection on read-only media?
  • •How are system and communications protection requirements defined and maintained?
  • •Who is responsible for configuring and maintaining the security controls specified in SC-34(2)?

Technical Implementation:

  • •How is integrity protection on read-only media technically implemented in your environment?
  • •What systems, tools, or configurations enforce this protection requirement?
  • •How do you ensure that integrity protection on read-only media remains effective as the system evolves?

Evidence & Documentation:

  • •What documentation demonstrates the implementation of SC-34(2)?
  • •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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