Attention - Windows users:

Here is the best and simplest solution I've found to close many OS-based privacy and security loopholes all at once. I've been applying it to all of my Windows machines.
#cososec

https://getblackbird.net/

One word of caution:
Read the documentation to see what it disables by default - ex. One Drive, Cortana.

Someone else from CoSo recommended this to me while talking on another platform, but it slipped my mind. If it was you, please speak up so I can thank you.