The goal of the Turing test is for a human to work out whether they're communicating with another person or a machine. Computers have gotten better at imitating people but they've also improved at ...

It’s not as if it hasn’t been done before, but researchers at Stanford quantified ways to crack the CAPTCHA test many web sites use to make users prove they’re human, and recommended ways to make sure ...

CAPTCHA used to be an easy and useful way for Web administrators to authenticate users. Now it’s an easy and useful way for malware authors and spammers to do their dirty work. CAPTCHA — Completely ...