How To Secure Your Spring App With Multi-factor Authentication

Hey friends! This is the long overdue follow-up to my TOTP tutorial. Using the latest Spring Boot and Spring Security versions, I show you how to implement Multi-Factor Authentication (MFA) based on time-based one-time passwords in this tutorial.

Check out the video on how to generate QR codes from a shared secret here    • How To Generate 2FA Codes With Spring...  

⚡ Danger Zone
This code disables some sensitive defaults in Spring Security. Don't just blindly copy the code as is! Make sure you know what you are doing and understand the implications. Also, if you spot any mistakes or you see me saying the wrong things, call me out for it in the comments!

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