This userid and password is the same for all copies of a version of software. The userid has a standard name and the password is initially set to the same word or character string. Default userids and passwords are everywhere. All Unix versions use the root userid as the initial userid during setup. However, all platforms, from including mainframes, midrange systems, desktop computers, network operating systems, and specialized devices such as routers have built-in userids and default passwords.
Database systems are big users of default passwords.
Software packages, such as games, use default passwords. Finally, the BIOS computer chips in many PCs have built in passwords. Uses of Default Passwords Built-in userids and passwords have a number of uses. Operating systems, databases and applications software use built-in userids and passwords for initial installations or for upgrades. Defaults are often essential to the installation process.