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SC.L2-3.13.8Data in Transit

>Control Description

Implement cryptographic mechanisms to prevent unauthorized disclosure of CUI during transmission unless otherwise protected by alternative physical safeguards.

>Cross-Framework Mappings

>Assessment Interview Topics

Questions assessors commonly ask

Process & Governance:

  • What policies and procedures govern implementation of Data in Transit?
  • Who is responsible for overseeing compliance with this requirement?
  • How do you communicate requirements to relevant personnel?
  • How often do you review and update policies related to this control?
  • What governance process ensures consistent implementation across the organization?

Technical Implementation:

  • What technologies and tools implement Data in Transit?
  • How do you technically enforce this requirement?
  • What automated mechanisms support this control?
  • What logging or monitoring provides visibility into implementation?
  • How do you verify technical implementation is functioning correctly?

Evidence & Documentation:

  • What network diagrams show boundary protection architecture?
  • What firewall rule sets and configurations can you provide?
  • What encryption implementation documentation shows FIPS-validated crypto?
  • What key management procedures can you provide?
  • What network segmentation documentation shows proper separation?
  • What evidence shows cryptographic mechanisms protect CUI?
  • What configuration documentation shows security controls are properly implemented?

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