> most of the time they are unwanted users trying to break in

Thankfully, we have wireguard now. It drops all packets by default. From the perspective of people who don't have the requisite cryptographic keys, it's like the computer is not even there to begin with.

I've always found it strange how people just put computers out there on the internet and just allow them to interact with total internet randoms. Why are we allowing our computers to talk to strangers? No wonder people are getting hacked.