There was that time you could login as root to an Apple computer by pressing Enter (with no password). https://www.theguardian.com/technology/2017/nov/29/macos-

There was that time you could login as root to an Apple computer by pressing Enter (with no password). https://www.theguardian.com/technology/2017/nov/29/macos-high-sierra-bug-apple-mac-unlock-blank-password-security-flaw https://www.theguardian.com/technology/2017/nov/29/macos-hig...