Abstract: The severity of attacks to Textual and Graphical Passwords has become a major threat to security nowadays. The vulnerabilities of this method which may be eves dropping, dictionary attack, social engineering, shoulder surfing etc. are the most difficult problem to defend against internet security. The goal of this paper is to understand various techniques used for authentication in the field of security. It would be necessary to come up with the better solution to solve the stated problem using the combination of existing techniques.
Keywords: Textual Password, Graphical Passwords, attacks, security, vulnerabilities, authentication.