FIDO2 and W3C WebAuthn Standard
FIDO2 (Fast IDentity Online) comprises the W3C Web Authentication (WebAuthn) specification and the FIDO Alliance Client-to-Authenticator Protocol (CTAP). WebAuthn Level 3 (2025) enables passwordless authentication using public key cryptography. Authenticators include platform authenticators (biometrics), roaming authenticators (security keys), and passkeys (synced credentials). Supported by all major browsers and operating systems. Over 15 billion accounts enabled for passkey sign-in.
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Framework Domains (23)
Accessibility
| Code | Title |
|---|---|
| FIDO2-V2-16 | Accessibility of Passkey Flows |
Assurance
| Code | Title |
|---|---|
| FIDO2-V2-18 | Threat Model Documentation |
Attestation
| Code | Title |
|---|---|
| FIDO2-V2-5 | Attestation Format Support |
Attestation and Trust
| Code | Title |
|---|---|
| ATT-1 | Attestation Formats |
| ATT-2 | Attestation Types |
| ATT-3 | Metadata Service Integration |
| ATT-4 | Enterprise Attestation |
Audit
| Code | Title |
|---|---|
| FIDO2-V2-20 | Audit and Forensic Readiness |
Authentication Ceremony
| Code | Title |
|---|---|
| WebAuthn-6.1 | Authentication Challenge |
| WebAuthn-6.2 | Assertion Verification |
| WebAuthn-6.3 | User Verification |
| WebAuthn-6.4 | Counter Verification |
Authenticator
| Code | Title |
|---|---|
| FIDO2-V2-7 | Discoverable Credentials Storage Limits |
Authenticator Compatibility
| Code | Title |
|---|---|
| FIDO2-V2-2 | CTAP Version Support Strategy |
Authenticator Requirements (CTAP2)
| Code | Title |
|---|---|
| CTAP2-1 | Authenticator API Commands |
| CTAP2-2 | Transport Protocols |
| CTAP2-3 | PIN/UV Protocol |
| CTAP2-4 | Credential Management |
| CTAP2-5 | Authenticator Configuration |
Cryptography
| Code | Title |
|---|---|
| FIDO2-V2-12 | Server-Side Random Number Generation |
Lifecycle
| Code | Title |
|---|---|
| FIDO2-V2-17 | Decommissioning Lost or Stolen Authenticators |
Mobile Implementation
| Code | Title |
|---|---|
| FIDO2-V2-11 | Origin Validation in Mobile Webviews |
Operations
| Code | Title |
|---|---|
| FIDO2-V2-14 | Rate Limiting and Account Lockout |
| FIDO2-V2-19 | Performance and Latency Targets |
Passkey Policy
| Code | Title |
|---|---|
| FIDO2-V2-10 | Backup Eligibility and Backup State Flags |
Privacy
| Code | Title |
|---|---|
| FIDO2-V2-21 | Cross-Border Data and Privacy Considerations |
Protocol Extensions
| Code | Title |
|---|---|
| FIDO2-V2-9 | Extensions Use and Validation |
Registration Ceremony
| Code | Title |
|---|---|
| WebAuthn-5.1 | Credential Creation |
| WebAuthn-5.2 | Authenticator Selection |
| WebAuthn-5.3 | Attestation Statement Verification |
| WebAuthn-5.4 | Credential Storage |
Security and Privacy Requirements
| Code | Title |
|---|---|
| SEC-1 | Aviation Security Programme |
| SEC-2 | Security Threat and Risk Assessment |
| SEC-3 | Security Training and Awareness |
| SEC-4 | Privacy Considerations |
| SEC-5 | Channel Binding |
Server Implementation
| Code | Title |
|---|---|
| FIDO2-V2-13 | Anti-Replay and Timestamping |
| FIDO2-V2-3 | Registration Ceremony Validation |
| FIDO2-V2-4 | Authentication Ceremony Validation |
Session
| Code | Title |
|---|---|
| FIDO2-V2-15 | Session Binding and Token Issuance |
Standards Conformance
| Code | Title |
|---|---|
| FIDO2-V2-1 | WebAuthn Level Conformance Target |
Trust
| Code | Title |
|---|---|
| FIDO2-V2-6 | Trust Anchor Management |
User Verification
| Code | Title |
|---|---|
| FIDO2-V2-8 | PIN and Biometric Policies |
Your Compliance Coverage
If you comply with FIDO2 and W3C WebAuthn Standard, you already cover:
FDA 21 CFR Part 11
7%
3 controls mapped
Compare →CNCF Cloud Native Security (Cloud Native Computing Foundation)
7%
3 controls mapped
Compare →HL7 FHIR Security Framework
7%
3 controls mapped
Compare →+ 308 more: 3GPP Security Architecture (TS 33.501 — 5G Security) (7%), NIST SP 800-92 (7%)
See all 311 mapped frameworks ↓Maps to 311 other frameworks
Frequently Asked Questions
What is FIDO2 and W3C WebAuthn Standard?
FIDO2 and W3C WebAuthn Standard is a compliance framework from International (W3C / FIDO Alliance) with 23 domains and 43 controls. FIDO2 (Fast IDentity Online) comprises the W3C Web Authentication (WebAuthn) specification and the FIDO Alliance Client-to-Authenticator Protocol (CTAP). WebAuthn Level 3 (2025) enables passwordless authentication using public key cryptography. Authenticators include platform authenticators (biometrics), roaming authenticators (security keys), and passkeys (synced credentials). Supported by all major browsers and operating systems. Over 15 billion accounts enabled for passkey sign-in. It is used by organisations to establish and maintain compliance with industry standards and regulatory requirements.
How many controls does FIDO2 and W3C WebAuthn Standard have?
FIDO2 and W3C WebAuthn Standard has 43 controls organised across 23 domains. The largest domains are Authenticator Requirements (CTAP2) (5 controls), Security and Privacy Requirements (5 controls), Attestation and Trust (4 controls). Each control defines specific requirements that organisations must implement to achieve compliance.
What frameworks does FIDO2 and W3C WebAuthn Standard map to?
FIDO2 and W3C WebAuthn Standard maps to 311 other compliance frameworks. The top mapping partners are FDA 21 CFR Part 11 (7% coverage), CNCF Cloud Native Security (Cloud Native Computing Foundation) (7% coverage), HL7 FHIR Security Framework (7% coverage). Use our comparison tool to explore control-level mappings between frameworks.
How do I get started with FIDO2 and W3C WebAuthn Standard compliance?
Start your FIDO2 and W3C WebAuthn Standard compliance journey by running a self-assessment on our platform to identify your current compliance posture. Our AI advisory can answer specific questions about FIDO2 and W3C WebAuthn Standard requirements, and cross-framework mapping helps you leverage existing controls from other frameworks you may already comply with. Create a free account to access all 43 controls and track your progress.
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