Every things on the internet is doing exactly this "dangerous things", with the exact same means you have at your disposal. Exposing a service is not dangerous

Every things on the internet is doing exactly this "dangerous things", with the exact same means you have at your disposal. Exposing a service is not dangerous. It is the same thing when you go to the sub and many people ask you for money : they keep asking, but that will not lead you to your bank account. So you have log, this is not an issue, this is not something to be scared of or even cared of. Just ignore them, as they are worthless and part of the v4 internet.