Your Computer Isn't Yours
Found on Sneak Berlin on Thursday, 19 November 2020
It turns out that in the current version of the macOS, the OS sends to Apple a hash (unique identifier) of each and every program you run, when you run it.
This data amounts to a tremendous trove of data about your life and habits, and allows someone possessing all of it to identify your movement and activity patterns. For some people, this can even pose a physical danger to them.
New rules in macOS 11 even hobble VPNs so that Apple apps will simply bypass them.
@patrickwardle lets us know that trustd, the daemon responsible for these requests, is in the new ContentFilterExclusionList in macOS 11, which means it can’t be blocked by any user-controlled firewall or VPN.
Probably all that is only for "user experience" too.