Verify identity before granting any access to the system.
What it actually means
Before anything reaches CUI, its identity is verified. Users authenticate through your identity provider; devices authenticate through MDM compliance and conditional access. No anonymous or unauthenticated access to the CUI environment.
Pass or fail — an assessor needs a "yes" to each
- All access paths require authentication first.
- Device authentication is enforced (compliant-device checks).
- No anonymous access to CUI systems.
What to have ready
- Identity-provider authentication settings
- Conditional-access policies requiring authenticated, compliant devices
Where teams trip up
- A path into the environment that skips authentication
- Device authentication not enforced (any device can connect once a user logs in)
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