Hi, recently I had my Mac reinstalled by our it department. Then I set up 1P again from the App Store and on first start it recognized somehow my account.
I was wondering how 1P could be set up properly this way while the master key (with the part even I don’t know) is stored locally only.
The only thing I could probably imagine is that this part is stored in the apple keychain and that I set up iCloud before 1P and thus, the master key was present on my Mac. Is this what happened?