I have an internal pc network, and separate wired networks for media, appliances. In some cases just to prevent them from auto updating to newer firmware that introduces advertising. Just as there is a guest network to keep guests and their kids out of DLNA shares and prevent torrenting. Then as any responsible consumer, the htpc is on a green power strip triggered by the light switch on an occupancy sensor since i can at least be in the living room before the components start sucking the 30 watts of standby power. If someone gets as far as my living room, i either dont care if they want to watch tv, or i am in no position to refuse. These components are designed to be idiot proof and authentication free. I'm not concerned that my infrared remote receivers are not paired, nor do i lose sleep at night that my neighbor could modify a universal remote and prank my tv through the bay windows either. I do concern myself that my locks weren't bump proof or that there wasn't a fire extinguisher near the kitchen, and that there are some vulnerabilities in my Nest.