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NIST 800-171 R-3.1.19

Encrypt CUI on Mobile Devices

Official citation: 3.1.19

Class: core · Severity: high

Statement of the obligation — verify against source

3.1.19

What it means

Encrypt CUI stored on mobile devices and mobile computing platforms such as phones and tablets. Use full-device encryption or, for finer control, container-based encryption of selected files, records, or fields, with FIPS-validated cryptography.

Educational reference only — not legal advice. Consult a qualified assessor or attorney for binding compliance determinations.