![]() ![]() They also prevent card and payment fraud by only allowing real users to fill out payment pages on websites and applications.ĬAPTCHAs can help maintain the accuracy of online polls by ensuring that only real human users are able to vote. By using a CAPTCHA, website owners can ensure that only humans, not bots, are accessing their website and using their services. What are CAPTCHAs Used For?ĬAPTCHAs are used to protect websites and online services from spam and automated attacks by bots. Such tests are used to prevent automated spamming, fraud and malicious attacks on websites, as bots in general cannot solve them with their current level of sophistication without assistance from humans. ![]() CAPTCHAs were developed as a type of challenge-response test used in computing to distinguish between human users and automated bots. What is a CAPTCHA and How Do CAPTCHAs Work?ĬAPTCHA, an acronym for “completely automated public Turing test to tell computers and humans apart,” is a technology used to determine whether an online user is a human or a computer program such as a bot.
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