Anti-Spam

NestJS reCAPTCHA v3 Integration in Practice: Unnoticeable Human Verification, Blocking Script Bots from Scratch

The comment interface of the blog system is under attack from script bots. By integrating Google reCAPTCHA v3, we achieve unnoticeable human verification. This covers the complete implementation of RecaptchaService, a four-tier score processing strategy, Guard integration, and frontend token acquisition.