What's stopping a random guy from walking around taking pictures through all the windows when they see you leave? Nothing. Dude just dresses up like the meter reader and does whatever he wants. Even if you "catch" the guy he did nothing illegal. In most places it's totally fine to stroll around on other people's land unless "no trespassing" is clearly marked. Got one of those big signs in your front yard?
If you ever leave the house I'm sure pictures of you with your family have been streamed on countless webcams over the years and probably live TV.
You have no real security unless you've got a cement room with no windows and a metal door. Anything less is just to make people feel better
Your perceived privacy violations sound pretty mundane to me.