alt Hacker News>I don’t know if it was a glitch or if I was getting the answers wrong.
It could also be that everything was working as intended because you have a high risk score (eg. bad IP reputation and/or suspicious browser fingerprint), and they make you do more captchas to be extra sure you're human, or at least raise the cost for would-be attackers.
Somehow, using Firefox on Linux greatly increases my "risk score" due to the unusual user agent/browser fingerprint, and I get a lot more captchas than, say, Chrome on Windows. Very frustrating.