CAPTCHA Based Web Security: An Overview

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Provided by: International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Topic: Security
Format: PDF
Completely Automatic Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a HIP (Human Interactive Proof) system. CAPTCHAs are used to improve the security of Internet based applications in order to ensure that a web based application which is intended to be used by a human being is not maliciously used by Artificially Intelligent programs called bots. As the current CAPTCHA methods are striving to turn out to be difficult for bots, they are gradually becoming difficult and annoying for human users as well.
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