What happens on your device, stays on your device – until it doesn't
obdev.atLittle snitch is awesome (these folks make that)
Wish it were available on ios.
(but since apple has to give permission, it isn't)
Apple know it would give the game away and so exempted their own software from Little Snitch et al as of Big Sur https://news.ycombinator.com/item?id=24838816
This was fixed not long thereafter.