Do you mean your WiFi? You might be able to tell your router or gateway to not transmit the SSID (it's WiFi name), but that doesn't really help security much, if at all. The only true security would be to turn your home into a Faraday cage so nothing could leak out.
Hide my network from others
If your looking to hide your SSID, on your internet browser go to (10.0.0.1). Then open the "Gateway" drop-down menu and click
"Connection", then "Wi-Fi". On the network you want to hide from others, click "Edit" and scroll down and turn off "Broadcast Network Name (SSID)". That should be it. Do join your network, go to your device and usually you would want to click "Other" and type in your SSID. I still recommend you use a WPA2 password still. Hope this helps you.