mmc, regedit, powershell, sure this could cascade much further, but I think maybe op had the default privacy options in mind, which enable windows to use the camera and microphone feeds as the os sees fit.
One of them is "Automatically trust WiFi connections my contacts trust", a bunch of others are sending data to Microsoft. It's been a few months since I turned on a new Windows 10 PC but I was completely turned off by the advanced configuration.
The #3 story on HN right now is "Windows 10 in-place upgrades are a severe security risk"
I thought this was a good read the other day https://www.brokenbrowser.com/abusing-of-protocols/
It just seems terrible security wise, the OS itself is spyware.
That is to say, I was excited to be trying out a sexy new Asus Ultrabook with Ubuntu mixed in but didn't care to try after setting it up.