Yes, you'd expect a more detailed response from a company like this. Clearly they have decided to hide that information, why? Is it embarrassing?
I am highly suspicious of claims of state sponsored actors being the culprits. It's the ideal excuse. Only the best of the best could beat us we are so great...
Where's your evidence that it was a state sponsored actor? Hmm you've decided not to provide that information, why?
My spidey sense is tingling.