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Apple is working to fix what has been called a ‘huge’ and ‘unbelievable’ security issue in the latest version of its Mac operating system.

The flaw could mean anyone can log in to a computer running MacOS High Sierra without a password via system preferences, using the root user account.
Apple previously advised its customers who may be affected to set a password for the device’s root user, which should stop people exploiting the vulnerability.
It has also now released a security update to address the issue, which users should download immediately.

‘Apple has worked hard to fix yesterday’s flaw as soon as possible.
‘But it shouldn’t have happened in the first place.’

Apple previously advised its customers who may be affected to set a password for the device’s root user, which should stop people exploiting the vulnerability. It has also now released a security update to address the issue, which users should download immediately.

Here’s how to manually fix:

1. To change the root user password manually, click on the Apple menu icon, then System Preferences and click Users & Groups (or Accounts).
2. Click the lock icon, then enter an administrator name and password.
3. Click Login Options, then click Join or Edit.
4. Click on the Open Directory Utility, then click on the lock icon in the Directory Utility window, then enter an administrator name and password.
5. From the menu bar in Directory Utility, choose Edit, then Change Root Password.
6. Enter a root password when prompted.

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