Two-Factor Authentication Doesn’t Replace CAPTCHA

What is a CAPTCHA?

In 1950, Alan Turing sought to evaluate how well a computer could behave…

FunCaptcha: Security Verification for People of All Abilities

As the world becomes increasingly more…

ReCAPTCHA is Still Vulnerable: Perhaps More Than Ever Before

PayPal Makes Strategic Investment in Arkose Labs

Playing with Humanity: Verification in Understanding

CAPTCHA: Using a Black Box Causes More Problems

We Cracked AOL’s Text CAPTCHA

Text CAPTCHAs don’t work.

FunCaptcha Speaks Your Language

Every day, users from all around the world attempt more than 200 million CAPTCHAs — but nearly half of…