Security checks / Check reference / Authentication methods
Auth User FIDO2 Attestation Not Enforced By User
High Severity Microsoft 365 security check in the Authentication methods domain.
FIDO2 attestation is not enforced. Without attestation, the origin and integrity of security keys cannot be verified Without attestation, any FIDO2-compatible device can register, including software emulators and unvetted hardware. Siemserva runs this check automatically across your tenant and maps every finding to the compliance frameworks below.
Check summary
What this check verifies
FIDO2 attestation is not enforced. Without attestation, the origin and integrity of security keys cannot be verified
Why it matters
Without attestation, any FIDO2-compatible device can register, including software emulators and unvetted hardware. You cannot verify keys are genuine hardware security tokens
How to fix it
Enforce FIDO2 attestation in the Authentication Methods policy; maintain an AAGUID allowlist of approved key models
Siemserva flags every tenant where this check fails and, with Senserva Trustworthy AI remediation, can propose a validated fix you approve before it applies.
Ask your own AI about this check
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Compliance framework mappings
Findings from this check serve as evidence for:
Related Authentication methods checks
Common questions
What does the Auth User FIDO2 Attestation Not Enforced By User check verify?
FIDO2 attestation is not enforced. Without attestation, the origin and integrity of security keys cannot be verified It is a High Severity check in the Authentication methods domain, one of the 650+ checks Siemserva runs across Microsoft 365, Intune, Defender, and Entra ID.
How do I fix a Auth User FIDO2 Attestation Not Enforced By User finding?
Enforce FIDO2 attestation in the Authentication Methods policy; maintain an AAGUID allowlist of approved key models Siemserva ranks the finding by Severity and, with Senserva Trustworthy AI, can propose a validated, approve-before-apply configuration fix.
Which compliance frameworks does this check evidence?
Findings from this check map to SCuBA, MCSB, NIST, SOC2, CIS, HIPAA, and MCSB controls IM-6, IM-7. That mapping is what turns a scan finding into audit evidence.
Can I ask my own AI about this check?
Yes. This page includes a free copy-paste AI prompt carrying the check's facts: what it verifies, the risk, the remediation, and the framework mappings. Paste it into Claude, ChatGPT, or Copilot; cite-worthy detail without giving an AI access to your tenant.
All 672 checks with severities and mappings: the Microsoft 365 security checks catalog.