Cookies are the special files which store all the information from login session to logout session on the web browser and we can say Cookies is a text file that a Web browser stores on a user’s machine. Cookies are a way for Web applications to maintain the application state called session time and that time and information are used by websites for authentication, storing website information/preferences, other browsing information and can help the Web browser while accessing Web servers. HTTP Cookies are known by many different names, including browser Cookies, Web Cookies. A Cookies contains specific information that is encrypted for security purposes. Normally, Cookies are attached with an HTTP header from the HTTP server to a Web browser in response to a user request.