The textual passwords have been used as an authentication method for a long time. It is well-known that users tend to select passwords that are easy to remember. It is easy for an attacker to obtain the password by probing for candidate passwords. This authentication method is easily cracked using some vulnerable techniques. Graphical password authentication is another method for the textual password-based method. Humans are better at recognizing graphical based information than text based information. The graphical password method is easy to use and securable than existing password techniques. Grid based password are also ones that have caught up with others in popularity. This paper analysis the security of such system.