An equivalent of 500 years wasted on CAPTCHA every day, Cloudflare says Updated: Updated: May 24, 2021 10:42 IST CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart, a way for online services to separate humans from bots. Share Article An equivalent of 500 years wasted on CAPTCHA every day. | Photo Credit: Special Arrangement CAPTCHA stands for Completely Automated Public Turing test to tell Computers and Humans Apart, a way for online services to separate humans from bots. (Subscribe to our Today's Cache newsletter for a quick snapshot of top 5 tech stories. Click here to subscribe for free.) Delivery network services (DNS) provider Cloudflare said it wants to replace CAPTCHA with a new security system after the company’s analysis revealed that time equal to 500 years is wasted on CAPTCHA every day.