Apple computer users are being urged to update their operating system after Apple discovered an easy to exploit security hole in macOS 10.13 (High Sierra).
The bug allowed full administrator access to the computer by giving the user name "root" and leaving the password blank.
Apple scrambled to patch the flaw and released an updated version early this morning New Zealand time.
The hole was discovered by Turkish software engineer Lemi Orhan Ergin, who went public after seeing the problem had been discussed almost two weeks earlier on an Apple support forum but without any response from Apple.
MacOS users are strongly advised to update their machines as soon as possible.
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