I'd be willing to bet this is actually true and the companies don't want to publically admit it and have to recall billions are dollars in tech and they probably convinced the government it would be detrimental to the companies and rhwbeconomy for it to happen as well.
So what happens when the AI decides the best way to keep everything cool is to shut everything down so it doesn't prodcue heat thus needing to be cooled in the first place? 100% efficiency
"[...] announced yesterday that the hack had taken place in June last year"
Why the heck did it take them a year to disclose this? Did someone finally leak this information and they finally had to admit to it?