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?
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?
I had read (in a comment here, so take with a grain of salt) that some had started doing Proof of Work.
I.E. they ask the visiting computer to do some math. This is potentially less annoying to people than clicking on traffic lights or typing unreadable text, but could get costly if you’re using bots.
how it block bots?, the bot just do the proof of work too
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