Non-random thought: It wasn't a cyber-attack.
?? Theory ??
Why do I say that? --Because it's the excuse that the press is reporting.
Having the permission to break in doesn't mean that they're automatically able to.
In any event, oil companies and equipment are primary cabal property. So, they're either (a) shutting if off deliberately, (b) have lost control of it due to white-hat hack, or (c) once-in-a-blue-moon the media is relaying the truth, and isn't the timing ever curious?
The reason I discount (c) is because they'd have just reloaded the software off back-ups by now, and any excuses that such back-ups don't exist (due to "aging infrastructure", lack of funding, general incompetence, etc) are dismissed out of hand as propaganda.