SPAM has always been a big problem since the internet started to be widely used. Bots (automated scripts) would insert information in the various forms that existed in most sites, trying to either ...

Google is working on a new, controversial reCAPTCHA challenge that might require you to literally show it your hand.

We’ve all tried to log into a website or submit a form only to be stuck clicking boxes of traffic lights or storefronts or bridges in a desperate attempt to finally convince the computer that we’re ...

Cloudflare announced that it has moved from Google's reCAPTCHA to hCaptcha, an independent alternative CAPTCHA provider focused on user privacy. CAPTCHAs (short for Completely Automated Public Turing ...

Carnegie Mellon University researchers pioneered CAPTCHA, a system to differentiate humans from bots, revolutionizing web ...