https://reason.com/2023/08/03/new-zealand-keeps-doxxing-registered-gun-owners/ New Zealand gun owner registry off to a rocky start.
One of the reasons why centralized databases can be problematic.
@olives Why is revealing the information bad? There is a lot of publicly available information about people. I'm an amateur radio operator; my address is in the FCC database.
This specifically covers guns, but really, you could apply the same risks to just about anything else.