this in a very interesting topic since some years ago I tried shodan (it's a search engine) that locates everything that is connected to the network from a refrigerator to a car, at first I didn't think it was dangerous but in an article of the "Onion Network" it was mentioned how it is possible for example to access a marker placed in someone's heart and make it fail if the person doesn't do what he wants are things that make you think that everything can be used for evil and that all progress brings with it dangers.