CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) has become an integral part of our online activities. Its primary goal is to verify that a user attempting to access a website is human rather than a malicious bot. By presenting challenges that are easy for humans to solve but difficult for computers, CAPTCHA effectively prevents automated attacks, spams, and data breaches. Common types of CAPTCHA include image-based puzzles, audio-based tests, and math problems. Although some argue that CAPTCHA can be frustrating for users, it remains imperative in maintaining online security and protecting websites from unauthorized access.

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