High Sierra is ver 10.13
Anyone Can Hack MacOS High Sierra Just by Typing "Root"On Tuesday, security researchers disclosed a bug that allows anyone a blindingly easy method of breaking that operating system's security protections. When anyone hits a prompt in High Sierra asking for a username and password before logging into a machine with multiple users, installing an application or changing settings, they can simply type "root" as a username, leave the password field blank, click "unlock" twice, and immediately gain full access.
https://www.wired.com/story/macos-high- ... hack-root/