If an attacker solves a CAPTCHA 1,000 times in one minute, that is a bot. Implement exponential backoff and IP blacklisting after repeated solves.
: Send a POST request with the solved string and your session cookie to the validation endpoint. Why Speed Matters captcha me if you can root me
Never use these techniques against real websites without permission. You will be rooted—in the sense of having your IP reported, your account banned, and potentially facing criminal charges. If an attacker solves a CAPTCHA 1,000 times
With AI models like GPT-4V (vision) and Claude 3 solving image-based CAPTCHAs better than humans, the arms race is ending. Google’s reCAPTCHA v3 already abandoned the explicit challenge—it now scores users silently. The next generation of “proof-of-human” might involve biometrics or hardware tokens. 000 times in one minute