CAPTCHA

CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a security measure used online to verify that a user is a human and not an automated bot. It often involves tasks that are easy for humans but difficult for computers, such as identifying distorted letters or selecting specific images. This helps prevent automated scripts from abusing websites, such as creating fake accounts or submitting spam. CAPTCHAs ensure that online interactions are genuine, protecting websites and their users from malicious activity while maintaining accessibility for real users.