Web sites providing different web services and applications with resources which millions of users need to access. This might lead to unethical use and wastage of resources. To avoid this Captcha security test which is an image verification test, is being used. Image Verification security method ensures the HIP where human user can easily recognize the same from distorted text. Captcha should not be only difficult to solve by computer programs, it should also be user friendly.
Web Security, Captcha Security, BOT.
Sandeep Mahato; Priyaswarupa Rani Pati; Prashant Tiwari; Raj Gaurav Mishra, Implementation of Advanced Captcha based Security System, HCTL Open International Journal of Technology Innovations and Research (IJTIR), Volume 15, May 2015, eISSN: 2321-1814, ISBN (Print): 978-1-62951-974-6.