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name: implementing-passwordless-authentication-with-fido2 description: Deploy FIDO2/WebAuthn passwordless authentication using security keys and platform authenticators, covering WebAuthn API integration, FIDO2 server configuration, passkey enrollment, biometric authentication, and migration from password-based systems aligned with NIST SP 800-63B AAL3. Use when implementing passkey login, configuring a FIDO2/WebAuthn server, or replacing passwords with phishing-resistant authentication. domain: cybersecurity subdomain: identity-access-management tags:

• iam
• identity
• access-control
• authentication
• fido2
• webauthn
• passwordless version: '1.0' author: mahipal license: Apache-2.0 atlas_techniques:
• AML.T0051
• AML.T0054
• AML.T0056 nist_ai_rmf:
• MEASURE-2.7
• MEASURE-2.5
• GOVERN-6.1
• MAP-5.1 nist_csf:
• PR.AA-01
• PR.AA-02
• PR.AA-05
• PR.AA-06 mitre_attack:
• T1078
• T1110
• T1556
• T1098

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Implementing Passwordless Authentication with FIDO2

Overview

Deploy FIDO2/WebAuthn passwordless authentication using security keys and platform authenticators. Covers WebAuthn API integration, FIDO2 server configuration, passkey enrollment, biometric authentication, and migration from password-based systems aligned with NIST SP 800-63B AAL3.

When to Use

• When deploying or configuring implementing passwordless authentication with fido2 capabilities in your environment
• When establishing security controls aligned to compliance requirements
• When building or improving security architecture for this domain
• When conducting security assessments that require this implementation

Prerequisites

• Familiarity with identity access management concepts and tools
• Access to a test or lab environment for safe execution
• Python 3.8+ with required dependencies installed
• Appropriate authorization for any testing activities

Objectives

• Implement comprehensive implementing passwordless authentication with fido2 capability
• Establish automated discovery and monitoring processes
• Integrate with enterprise IAM and security tools
• Generate compliance-ready documentation and reports
• Align with NIST 800-53 access control requirements

Security Controls

Control	NIST 800-53	Description
Account Management	AC-2	Lifecycle management
Access Enforcement	AC-3	Policy-based access control
Least Privilege	AC-6	Minimum necessary permissions
Audit Logging	AU-3	Authentication and access events
Identification	IA-2	User and service identification

Verification

• Implementation tested in non-production environment
• Security policies configured and enforced
• Audit logging enabled and forwarding to SIEM
• Documentation and runbooks complete
• Compliance evidence generated