captcha
2021-5-14 20:56
最近CloudFlare发布了基于Fido的CAPTCHA更换。您可以了解更多有关IT HTTPS://blog.CloudFlare.com/Introdute-cryptographic-attestation-of-personhood/，并在此处尝试https://cloudflarechalrenge.co......
2008-12-12 14:27
Have you ever thought that reCAPTCHA can be used to protect your E-mail address from being leaked?
2008-9-25 22:47
CAPTCHAs are annoying techniques, and according to statistics, global users complete 100 million CAPTCHA tests every day. ReCAPTCHA is a project initiated by C......