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Security plays an important role in all field nowadays, based on a hard AI problem for security is emerging as an new paradigm, but has been under explored the existing methodology which addresses this problem is captcha technology, But in this paper new system called captcha as graphical password along with this technology multilevel access authentication is also included that provides more security. This combined technology addresses a number of security problem such as, online guessing attack, relay attack, surfing attack etc, CaRP offers reasonable security that appears to fit well with all sort online security and provides efficient security.

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Sharanya.P, Vijaya Sharon.A, Vijay.S, & Dhivya.P. (2015). CAPTCHA AS A GRAPHICAL PASSWORD –MULTILEVEL SECURITY PRIMITIVE . International Journal of Intellectual Advancements and Research in Engineering Computations, 2(3), 33–36. Retrieved from