CAPTCHA is a full form Completely Automated Public Turing test to tell Computers and Humans Apart. Why it's important for online security with examples It refers to various authentication methods that validate users as humans, not bots, by presenting a challenge that is simple for humans but difficult for machines. CAPTCHAs prevent scammers and spammers from using bots to complete web forms for malicious purposes. In this article, I’ll explain what CAPTCHA is, how it works, its different types, how it’s evolved, and why it matters today. CAPTCHA (Completely Automated Public Turing Test To Tell Computers and Humans Apart) is a system designed to differentiate between human visitors to a website and robotic agents. Administrators can validate incoming users with CAPTCHAs and websites can identify whether a user is real or malicious.
