[gabriel34]

my isp has a built in public (captive portal) wifi network that I can't turn off. They use it to provide wifi hotspots all over the country. rf shielding is a non destructive mod I can do to block the rogue wifi

[Metacelsus]

if this is Comcast, you can also just buy your own modem/router

[pnutjam]

I believe you can also turn it off in your account settings.

[jiveturkey]

it has been known to turn itself back on. for comcast, besides buying your own, you can also request a non-wifi router.