One of the most important field in our modern technology is related to protecting the information and securing it. We are going to develop a new security primitive that isCaptcha as graphical passwords. A Captcha is an acronym for “Completely Automated Public Turing test to tell Computers and Humans Apart.” The normal scenario for protection or security against attacks is unique user name and password, but this kind of security is normally breached and various attacks are being performed. Captcha provides security against attacks performed by bots. The introduction of Captcha as graphical password will addresses a number of security problems like online guessing attacks, relay attacks, and, if combined with dual-view technologies, shoulder-surfing attacks. The generation of Captcha requires a number of algorithms and there are various types of captcha’s that can be used. Using Captcha as password will avoid or make it impossible for the hacker to make brute force attack or guessing attacks. Captcha as graphical password will add new degree of protection thus making the data more secure and safe. Now-a-days the count of online banking and other transaction services users is increasing with a large number; this approach acts as a new security level to these services.
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