macOS High Sierra security vulnerability discovered, here’s how to set root password for fix

A newly discovered macOS High Sierra flaw may be leaving your personal data at risk. Software Developer Lemi Orhan Ergin, reached out to Apple Support on Twitter to let them know of the vulnerability he discovered. In the attack, someone with physical access to a macOS machine, can access and change personal files on the system without needing any admin credentials. Users with haven’t disabled guest user account access, or changed their root passwords, are currently open to this attack. We’ve laid out instructions on how to protect yourself in the meantime until an official fix from Apple is released.