Secure Captcha Input based Spam Prevention
L. Devi Priya1, S. Karthik2

1L.Devi Priya, ME-Software Engineering, SNS College of Technology, Coimbatore, Tamil Nadu, India.
2Dr. S. Karthik, DEAN/CSE, SNS College of Technology, Coimbatore, Tamil Nadu. India.

Manuscript received on May 11, 2013. | Revised Manuscript received on May 15, 2013. | Manuscript published on May 25, 2013. | PP: 9-12 | Volume-1 Issue-7, May 2013. | Retrieval Number: G0288051713/2013©BEIESP

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Abstract: Spam is one of the principal stumbling blocks of Internet, which consistently emerge as redundant or unsolicited messages in various communication areas. For example in VoIP, spam appears as unnecessary calls generated by the computers and other auto call generating BOTs. In WEB servers like Gmail, FTP servers like Rapid Share spam appears as fake accounts creation and it sometimes lead to jam of server process due to the BOTs. We have anticipated a resolution to thwart the spam using SECURE CAPTCHA INPUT (SCI) system. CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Human Apart) method aims to determine whether the call is coming from a human or a machine. A CAPTCHA is a type of challenge-response test used in computing to ensure that the response is not generated by a computer. The process usually involves one computer (a server) asking a user to complete a simple test which the computer is able to generate and grade. Because other computers are unable to solve the CAPTCHA, any user entering a correct solution is presumed to be human. Thus, it is sometimes described as a reverse Turing test, because it is administered by a machine and targeted to a human, in contrast to the standard Turing test that is typically administered by a human and targeted to a machine. CAPTCHA that is deployed here is a 3D model developed with action script that can overcome RT-MITM attack which is another milestone in the CAPTCHA security.
Keywords: CAPTCHA, SPAM, RT-MITM attack.