In my opinion, I'd say the shortness and lack of details backs up the story that they had no idea. You'd see way more words if a marketing department had it's hands on something like this. This was 100% a get something out asap job.
>>WestCo+R3
I don’t see any verbiage that implies Microsoft had no idea. If Microsoft was the aggressor, of course they would play dumb and disclose as little as possible.