CAPTCHA is a security measure to distinguish between humans and bots, evolving from text to image and audio challenges.

Cloudflare's "I'm not a robot" checkbox is one of the simpler alternatives to puzzle-based CAPTCHAs and is also widely used across the internet to prevent spam and automated attacks.

Others felt the incident highlighted the risks of websites using the “I’m not a robot” checkbox in lieu of the more complicated CAPTCHA test.