default account

A system login account (usually accessed with a user identifier and password) that has been predefined in a manufactured system to permit initial access when the system is first put into service. (See: harden.)

Tutorial: A default account becomes a serious vulnerability if not properly administered. Sometimes, the default identifier and password are well-known because they are the same in each copy of the system. In any case, when a system is put into service, any default password should immediately be changed or the default account should be disabled.