Details

The login window _MUST_ be configured to prompt all users for both a username and a password.

By default, the system displays a list of known users on the login window, which can make it easier for a malicious user to gain access to someone else’s account. Requiring users to type in both their username and password mitigates the risk of unauthorized users gaining access to the information system.

Solution

This is implemented by a Configuration Profile.

mobileconfig profile info:

com.apple.loginwindow:
SHOWFULLNAME:
True

Supportive Information

The following resource is also helpful.

• https://github.com/usnistgov/macos_security

This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Unix.

References

• 800-53|IA-2
• CCE|CCE-85435-6

Source

• Tenable.com/audits