A CAPTCHA (/ ˈkæp.tʃə / KAP-chə) is a type of challenge–response Turing test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term …

reCAPTCHA is a free service that protects your site from spam and abuse. It uses advanced risk analysis techniques to tell humans and bots apart. reCAPTCHA v3 helps you detect abusive …

A CAPTCHA test is designed to determine if an online user is really a human and not a bot. CAPTCHA is an acronym that stands for "Completely Automated Public Turing test to tell …

reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. A “CAPTCHA” is a turing test to tell human and bots apart. It is easy for humans to solve, but …

CAPTCHA: Telling Humans and Computers Apart Automatically A CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but …

Feb 11, 2025 · While CAPTCHA can be a minor inconvenience, it's a necessary tool for keeping websites safe from spam and automated attacks. Understanding how it works and how to …

CAPTCHA stands for "completely automated public Turing test* to tell computers and humans apart." It refers to various authentication methods that validate users as humans, not bots, by …

Sep 14, 2024 · A completely automated public Turing test to tell computers and humans apart (CAPTCHA) is designed to limit access. If you're a human, you can pass these tests and gain …

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. …

Jun 3, 2025 · CAPTCHAs are tools you can use to differentiate between real users and automated users, such as bots. CAPTCHAs provide challenges that are difficult for computers …