Apple breaks file sharing on Macs while fixing 'huge' password security flaw

Emergency patch for bug that allowed anyone to take control of a Mac running macOS High Sierra prevented some users from sharing files

In its haste to fix the macOS High Sierra bug that allowed anyone to take control of a Mac computer with a blank password, Apple broke file sharing for some users.

Having been notified of the "huge" security hole on Tuesday, the company's security engineers raced to fix the problem, releasing an update that was pushed out to users of macOS High Sierra on Wednesday afternoon.