When installed, and depending on which options it is installed with, there are a bunch of standard users pre-created in Oracle.
Additionally, third-party software often has its own set of schemas/users that will be created in the database as part of the application install or setup.
Is there a list of these users, preferably with the 'source' (such as Standard oracle user, Application XXX). This would assist in auditing which users are needed and which might be superfluous.
Default passwords would also be useful to confirm that the defaults are not usable.