i was thinking about 'hidden powerline networking' as a threat
   the other day. basically anything that could be plugged into a
   socket with hidden one-way networking on chip, that would
   be able to siphon network data or use as a sensor or bug &
   send this data into a larger circuit, say apartment electrical
   wires that could be picked up remotely as frequencies that
   are outside ordinary spec, at another onsite location such
   that a device simply is plugged into the same site to reveal
   or tap into the data. i imagine this is completely TRIVIAL
   to accomplish, especially due to no regulatory/enforcement
   or consumer protections in a security or commercial context
   as it aids surveillance goals, especially in political framework
   of secret policing, informers, etc. spying by the populations.
   such that anything with a cord potentially could feed such
   data, if designed this way. speakers or router or monitor or
   printer or clock or lights or blender or microwave, etc. and
   that it could seem innocuous, yet have this capacity or this
   'surveillance potential' (as in, potential energy vs. applied),
   such that grassroots on-site monitoring could be aided and
   abetted likewise by such technological compromise, this
   in terms of intent and design or perhaps not revealed or
   deployed though part of a COT readymade solution that
   just requires smd circuitry add-ons to activate functionality
   this could be a stupid-model, versus smart expert systems
   or total monitoring solutions, the dust mote approach that
   leads towards a *density* of surveillance means/measures
   what is the square-footage of surveillance in your domain,
   etc. how many bugs per cubic meter, what if it was not
   one or two and instead, potentially dozens, this beyond
   the computer itself, in the realm of what it is possible and
   thus a question of where ubiquity may exist when fully
   surveilled, to what degree is maximal different in kind
   from minimal, such that the garage door opener and
   the car and dishwasher and HDTV and phone and the
   LED lights and remote-control car are monitoring you,
   in addition to computers, cellphone, conversations.
   (such as: is your router and neighbors wi-fi being used
   as an attack vector, are you being imaged via through-
   wall radar via wi-fi, for tracking and monitoring. or being
   made ill via out of spec radiation boosting via wi-fi, etc)