CAPTCHAs can still detect AI agents

(research.roundtable.ai)

19 points | by timshell 1 hour ago

4 comments

  • technotarek 5 minutes ago
    Apparently CloudFlare’s turnstile can’t, as evidenced by several public-facing CRUD and mail routines we maintain that no longer are warding off the spam.
    • hellcow 1 minute ago
      Meanwhile the moment I (a human, of which I'm reasonably confident) see a Cloudflare captcha I nope immediately out of the site and block it forevermore in Kagi. It's not worth the waiting game.

      "Verifying..." lasts ages.

      Akamai with its anime girl provides no such annoyance.

  • docheinestages 21 minutes ago
    I think it's just a game of cat and mouse. It might be easier to catch naive AI agents that are not fine-tuned for specific CAPTCHA tasks with human behavior, can't recognize new challenges, don't know when to stop and ask a human, and just want to brute force their way with limited or no specialized harness and tools available.
  • cute_boi 30 minutes ago
    I’ve been using Claude Opus 4.7 with Chrome MCP, and it has worked successfully about 95% of the time. However, I’ve failed various hCaptcha challenges.
  • BiteCode_dev 34 minutes ago
    Until they learn to do that. So cat and mouse. So nothing new.
    • catsrus 27 minutes ago
      think the point is that they can't just "learn to do that", because to do so would mean solving human mind (that famously hasn't been going well)
      • sigbottle 22 minutes ago
        Well no, the idea is a tradeoff between interfaces and telemetry.

        OK, the agents don't click in the same way as humans. You learn that, what about mouse hovering telemetry, time spent, etc. And one of the most extreme is to force biometrics - a lot of telemetry, breaks the interface a lot - but hey, you have assurance.

        And none of these tradeoffs require understanding the deep processes of the human mind. Just, map is not the territory, how you do game the map harder and harder and how do the mapmakers respond to that?

        • catsrus 19 minutes ago
          did you look at the paper? they specifically look at mini tasks with cognitive processes (Eg what dictates the strategy of how people solve tasks)