Learn WebAuthn Workflows and Web Authentication APIs

Traditional passwords are no longer enough to secure modern web applications against phishing and credential stuffing. This course introduces you to WebAuthn, the modern standard for secure, passwordless authentication using biometric sensors and physical security keys. You will learn how to replace vulnerable login screens with robust cryptographic authentication. Starting with core security concepts, you will understand how public-key cryptography protects user identity. You will then explore the complete lifecycle of WebAuthn, including registering new credentials and authenticating returning users. What you'll learn: Understand the foundational concepts of public-key cryptography and the role of relying parties; Configure the registration workflow to securely enroll new authenticators like biometrics and security keys; Implement the authentication workflow to verify returning users without passwords; Handle browser compatibility, feature detection, and credential management APIs; Apply modern security best practices to protect your authentication endpoints. You will begin with essential security terminology before moving into step-by-step code implementation patterns for both client-side and server-side logic. This course is designed for web developers and security enthusiasts who are new to passwordless standards and want to build modern, secure authentication flows. Begin your journey toward a passwordless future today.