CAPTCHA is an ultra-modern security approachin the world of internet. There is various form of CAPTCHA.This paper proposed another form of CAPTCHA calledImage-based CAPTCHA. Image-based CAPTCHA is moresecuring as compare to other CAPTCHA (Text and Audiobased CAPTCHA) techniques. Image-based CAPTCHA hasbeen introduced to address the limitations of previousCAPTCHA methods. It is used to controlled mutilations areapplied to haphazardly picked images and introduced to aclient for an explanation from a given list of words. In thispaper, we centre on how AI strategies perceive Image-basedCAPTCHA. Additionally, we recall the image-basedCAPTCHA. This paper proposed a strategy dependent on theBack Propagation algorithm to pinpoint the image-basedCAPTCHA.
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