alt Hacker NewsCaptcha can detect the same person passing a captcha over and over. We shadow-ban to increase the cost of this kind of attack.
Source: I wrote the og detection system for hCaptcha
Captcha can detect the same person passing a captcha over and over. We shadow-ban to increase the cost of this kind of attack.
Source: I wrote the og detection system for hCaptcha
This is really interesting. How can you detect when it's the same person passing a captcha? I don't think IP addresses are of any use here as Anti-Captcha proxies everything to their customer's IP address.