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A CAPTCHA (/ ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]
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.
CAPTCHA is a program that protects websites against bots by generating and grading tests that humans can pass but current computer programs cannot. For example, humans can read distorted text, but current computer programs can’t.
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 presenting a challenge that is simple for humans but difficult for machines.
What is a CAPTCHA? 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 Computers and Humans Apart." Users often encounter CAPTCHA and reCAPTCHA tests on the Internet.
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 access. If you're a bot, you can't.
Sep 30, 2021 · CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a human response test used to prevent spam on websites.
Oct 15, 2022 · The acronym CAPTCHA stands for “Completely Automated Public Turing Test to Tell Computers and Humans Apart”. It’s a challenge-response test websites use to quickly differentiate real human users from bots. Websites use CAPTCHA tests to determine whether an actual user or a bot is attempting to access a web page.
A CAPTCHA is a type of challenge-response system designed to differentiate humans from robotic computer programs. CAPTCHAs are used as security checks to deter spammers and hackers from using forms on web pages to insert malicious or frivolous code.
CAPTCHA is an acronym that stands for Completely Automated Public Turing test to tell Computers and Humans Apart. It is a type of challenge–response test used on websites across the internet to determine whether a user is a human or a bot.
