My company defeated this accidentally by having WIFI routers on the ceiling & a bunch of laptops on WIFI. Even the printer is WIFI. We don't even have Ethernet ports. Blast the electric outlet and you'll just burn-up the power bricks (we had that once: lightning).
The only data cables are to the displays (when not AirPlay/WiDi). Even the keyboard & mouse is wireless.
Does this mean we've already dealt with the problem?