[stordoff]

Why would they? The immediate concern is whether or not the exploits are still a risk, not determining the origin. Any future use of them is likely to be groups other than NSA at this point anyway.

If/when Microsoft do call out the NSA, I imagine it'll a) be filtered through their press/PR teams and b) be after they've had time to verify the source (it seem overwhelmingly likely to be NSA-originated, but I'd guess MS will do their own investigation and not just take it at face value).

[toyg]

MS will never "call out" anybody, in particular nobody in the US government - one of the few entities on the planet who can make Redmond lives materially harder. MS and authorities have a long history of peaceful collaboration and there is no reason to believe this state of things will change anytime soon.