Nadella has just said that he would support a "don't-call-it-a-backdoor" backdoor key for the U.S. (and I assume other) government(s):
https://www.theverge.com/2020/1/13/21064267/microsoft-encryp...
Also, there are at least several other instances that make Microsoft highly suspicious in regards to this stuff, starting with:
- how they bought Skype not long after the NSA was promising billions of dollars (in government contracts most likely) to the company that would bypass Skype's encryption somehow
- changing Skype's architecture to be intercept-able
- Skype entering the PRISM program the moment Microsoft bought it
- some other suspicious "bugs" and design choices in regards to how Bitlocker works, including storing the encryption keys on its servers or defaulting to break-able OEM encryption. Plus the fact that you never do hear about law enforcement being thwarted by laptop encryption
- silently adding root certificates in Windows with no official documentation, some for some oppressive regimes, other for the U.S. government
- Not to mention that the first thought that came to my mind after hearing about all the hidden tracking stuff built into Windows 10 was that Windows 10 must have been designed based on a FBI/NSA wishlist.
If you've ever done anything "wrong" on your Windows 10 machine, the U.S. government will know about it, because Microsoft will know about it. At least Microsoft revealed to us that half of the government's orders to the company were secret and came with gag orders -- too bad they never really fought the government on it and ended-up supporting it with the Cloud Act.
There are probably others I missed myself or forgot about. Nadella must think of us all as idiots if he thinks we'll buy the idea that a specially-made encryption key for various governments doesn't equal a backdoor.