MSEC.single-user.patch.pkg.sit

The MSEC single-user patch disables the ability to boot into single-user mode under OS X. If this patch is not applied then anyone with physical access to the Mac OS X machine can gain root access easily by holding down the command and s keys at startup. The patch disables this by installing a modified version of /sbin/mach_init. The patch does NOT backup the insecure version of /sbin/mach_init so if for some strange reason you want to revert to the insecure copy of mach_init you must restore that file from your own backups. If you have any questions check our website at http://www.msec.net or email support@msec.net.