alt Hacker NewsA fun fact about Google captchas: they've often decided whether you will succeed or fail the captcha before you do the captcha.
A fun fact about Google captchas: they've often decided whether you will succeed or fail the captcha before you do the captcha.
I implemented something similar for my bot defences. If headless chrome is detected you still get the same anubis-style PoW but even if you submit the right answer you get rejected.