Auth

Implement secure authentication and authorization using JWT, OAuth2, session management, RBAC, permissions, and resource ownership verification.

Authentication and authorization patterns — JWT, OAuth 2.0, sessions, RBAC/ABAC, password security, MFA, and vulnerability prevention. Use when implementing login flows, protecting routes, managing tokens, or auditing auth security.

Implement WebAuthn passkeys avoiding critical security and compatibility pitfalls.

Implement OAuth 2.0 and OpenID Connect flows securely.

Configures Firebase Authentication — providers, security rules, custom claims, and React auth hooks

Build secure access control with RBAC, ABAC, permissions, policies, and scope-based authorization.