[Cryptography] NSA and cryptanalysis

[James A. Donald]

On 2013-09-01 9:11 PM, Jerry Leichter wrote:
> Meanwhile, on the authentication side, Stuxnet provided evidence that the secret community *does* have capabilities (to conduct a collision attacks) beyond those known to the public - capabilities sufficient to produce fake Windows updates.

Do we know they produced fake windows updates without assistance from 
Microsoft?