[fma]

Faraday cage your house somehow. Stick to land-line and ethernet.

[papito]

Wireless emissions are not the problem. No one really cares about you enough (no offense), to spy on your proximity. It's the devices in your home with outside connection. Through your ethernet.

[NickNameNick]

You can firewall your internet connection. But what can you do when these devices start using their own embedded cell modems?