That's a matter for police then. Any thing involving location data and semi-public information could land you a stalker.

Anything can happen to anyone. Whether to care about it at all, involve the state or solve it solve it yourself depends on probabilities involved.

So privacy doesn't matter? And the police are the right solution for all invasions of your privacy? Do I get the local police involved if remote attackers use personal information to drain my bank account?

"The police" (local?) are a solution for certain kinds of problems, but that's it.

Consider restraining orders and all the victims these orders failed to protect. Far more effective is a large dog or other adult humans.