If you can use a keyboard you can get in. This exploit doesn't require any mad NSA-type hacker skillz.
All Macs running up-to-date macOS are wide-open for attacks. That means if you stole a Mac, or just get physical access to one while the owner is away, you own all the data on it. You may very well find that you just logged into your system as the root user, that is the administrator. Now check 'Other User' and entered root as the username and leave the password empty. Go over to your Mac running High Sierra and try this: Wake it up and go to your login screen. What are we going to do with you? In your most recent High Sierra macOS release, it turns out you've given a way for any local user to take over a Mac - lock, stock, and two smoking barrels.
Video: High Sierra's biggest changes aren't visibleĪpple, Apple, Apple.
