When users interact with your web application, their current state is referred to as a session. Session data allows your application to remember the identity of end-users for the entire period they're logged in. In a typical web application, an end-user submits a username and a password in a login form. Your application then finds those credentials in a database. If there is a match, you simply grant the user permission to access your web application. Otherwise, the user receives an access denie......