[KnuthIsGod]

The presence of a Russian keyboard makes it attractive to NSA malware..

[v5v3]

Russia, china etc ban windows from any military or sensitive government employee machines. they use their own Linux distros.

[chupasaurus]

There is a hardened version of Win7 for sensitive machines, probably made of source code Microsoft provided. Edit: Since I had to deal with it in 2011 there's at least Win8.1 version.