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DelJo63
If you’re running macOS High Sierra, it’s time to update your Mac as soon as possible. Apple has released a security update that addresses the security vulnerability discovered yesterday afternoon. The update is available now through the Mac App Store.
see https://9to5mac.com/2017/11/29/macos-root-fix/
see https://9to5mac.com/2017/11/29/macos-root-fix/