Authentication & Authorization with Clerk

Why We Use Clerk

The Authentication Problem

Building secure authentication from scratch requires:

• Password hashing (bcrypt/Argon2 with proper salts)
• Session management (secure cookies, expiration, renewal)
• Password reset flows (secure token generation, email verification)
• Account lockout (prevent brute force)
• MFA support (TOTP, SMS, authenticator apps)
• Social login (OAuth flows for Google, GitHub, etc.)
• User database sync
• Security best practices for all of the above

Time to implement securely: 2-4 weeks for experienced developers

For vibe coders using AI: High risk of security gaps