auth

To implement JWT refresh token rotation in NestJS, generate new access and refresh tokens upon each refresh request, store them securely in httpOnly cookies, and blacklist compromised tokens to prevent unauthorized reuse.

The best way to set up OAuth2 social login in Node.js is to use integration guidelines for providers like Google, handling the authorization code flow and securely managing the resulting tokens within your Express or NestJS application.

Yes, you can implement RBAC in Express applications by applying role-based guards to protect routes, ensuring only users with specific roles can access protected backend resources.

Both bcrypt and Argon2 work well for password hashing in Node.js, but Argon2 is generally recommended for modern applications due to its resistance to GPU-based attacks, while bcrypt offers proven reliability and easier configuration.

You need to blacklist JWT tokens on logout because JSON Web Tokens are stateless; blacklisting ensures that a valid token cannot be reused by malicious actors after the user has cleared their secure cookies and ended the session.

Common authentication security pitfalls in Node.js include failing to use httpOnly cookies for token storage, neglecting token blacklisting during logout, and improperly configuring password hashing algorithms like bcrypt or Argon2.