A password-protected account is created when a user signs up with an email/password combination. These accounts are typically created through a mobile app or website integration. The password attached to the account prevents any unauthorized users from editing their account details.
When a user signs up on a mobile app or web app, they create an account with an email and password. For security purposes, the password is encrypted, and only the user with that password is able to edit their account details or change their password.