We're not black-hat guys, and I don't know how to hack into your home router. I could probably find out how to crack simple system w/o too much trouble, and I know there's a network of folks who share more sophisticated info (but I'm not known to them, or they to me, so I can't get in). I assume the big agencies know most of the tricks.
So don't worry, I won't be trying to figure out if you brush your teeth thoroughly. Or perusing your song playlist. Or listening to your baby monitor. I'm a nice guy.
(*) He's responsible for our South Pole computer systems, and for training winter-overs.