I have noticed that some CAPTCHA pages, like Cloudflare's, simply ask you to check a box to proceed. There is no clicking on traffic lights or entering characters. How does clicking on a check box tell them I am not a robot?

you are viewing a single comment's thread
view the rest of the comments
[–] 2 points 2 years ago (1 child)

how it block bots?, the bot just do the proof of work too

  • source
  • parent
  • hideshow 2 child comments
  • [–] 19 points 2 years ago

    It doesn't block them exactly, but it's trying to make it uneconomical to target the site using bots - if it now takes 1 second to perform the action rather than 1/100th of a second, you now need 100x more bots to achieve the same effect

  • source
  • parent