[fsflover]

Not the parent, but have you heard of Snowden leaks? Also this from the old times: https://en.wikipedia.org/wiki/NSAKEY

[0x1d7]

Snowden says nothing about backdoor'ed Windows.

And _NSAKEY... There is no evidence that it was ever part of a backdoor. But it is good for a laugh.

[fsflover]

It's safe to assume that Windows is backdoored, as it's closed, not audiatable and is a part of PRISM. It's not a proof, but this is how good opsec works.

And yes, this is not equivalent to what the parent said, but your reaction should be similar.

[0x1d7]

While it is closed, we've had enough leaks from that era of Windows (which are still on GH) to know the kernel is not backdoor'ed.