It would be extremely difficult for them to do that on mine since it stays unplugged from the USB until I need it.
I keep mine pointed to the ceiling. But hey, now that I know they can do it whenever they want, I'm going have it pointed at a nice picture of Obama with the letters FUBO across it all the time......
Suck it, NSA.
I don't even have one. When I did, I did like you and only plugged it up when needed. Many devices have them built-in and in most you can disable them. Don't know if they can re-enable or not, but a piece of tape over the lens would stop them. Seems like they would get more "useful" data by hacking the files than they would by watching your face look at the screen.