There are actually many ways to look inside a "black" box, for example: an employee with high moral qualities might leak the info, or a company might send an em

There are actually many ways to look inside a "black" box, for example: an employee with high moral qualities might leak the info, or a company might send an email containing person's name from an US server, or an mobile app can be reverse egineered, or data might be available via foreign API server, or hackers might publish the leaked data, etc.