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govconCyber — Federal Cybersecurity Law Reference
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X-CUI-SSI Informational

Protect Sensitive Security Information

Official citation: 49 CFR Part 1520; 49 CFR Part 15

Class: informational · Severity: medium

Requirement text

49 CFR Part 1520; 49 CFR Part 15

What it means

Sensitive Security Information is transportation- and security-related information whose disclosure is prohibited by regulation. 49 CFR Part 1520 (and 49 CFR Part 15) governs who may access SSI and how it must be handled. SSI has its own marking and 'covered persons' rules distinct from general CUI.

Required by

  • — 49 CFR Part 1520; 49 CFR Part 15

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