[sic]He found that by entering the username "root", leaving the password field blank, and hitting "enter" a few times, he would be granted unrestricted access to the target machine.<p>...
...<p>a member of Apple's support forums had posted details of the flaw more than two weeks ago, though the tone of his message appeared to suggest he saw the vulnerability as a useful feature for troubleshooting rather than a critical security threat.[/sic]