CMMC Level 2 · Identification & Authentication

CMMC Level 2 3.5.11: Obscure Feedback

3.5.11 — Obscure Feedback — is one of the 110 CMMC Level 2 requirements. This page gives the exact requirement text, every assessment objective, and what evidence an assessor will ask for.

Last reviewed: October 18, 2026

What this requirement asks

Obscure feedback of authentication information.

This is a CMMC Level 2 requirement in the Identification & Authentication family, drawn from NIST SP 800-171 Rev. 2. An assessor evaluates it objective by objective — every objective below must be supported by evidence, not just described in a policy.

Assessment objectives (1)

  • 3.5.11[a] — authentication information is obscured during the authentication process

What an assessor examines

Examine:

  • Identification and authentication policy
  • procedures addressing authenticator feedback
  • system security plan
  • system design documentation
  • system configuration settings and associated documentation
  • system audit logs and records
  • other relevant documents or records

Interview:

  • Personnel with information security responsibilities
  • system or network administrators
  • system developers

Test:

  • Mechanisms supporting or implementing the obscuring of feedback of authentication information during authentication

Evidence that defends it

Show login errors are generic

Check your readiness

Score this requirement against your own environment with the Level 2 self-assessment checklist, or estimate your SPRS score with the free CMMC compliance tool. Self-reported answers are planning signals only — they do not establish a verified or assessor-accepted result.

Frequently asked questions

Is 3.5.11 required for CMMC Level 2?

Yes. 3.5.11 (Obscure Feedback) is one of the 110 Level 2 requirements from NIST SP 800-171 Rev. 2. Every assessment objective must be met with supporting evidence.

What evidence satisfies 3.5.11?

Show login errors are generic

Further reading

Related Athena pages and authoritative external references.

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