You can tell if someone is stealing your Wi-Fi by checking the status of your router, using an app, or logging into your admin controls.

You can change your IP address from the network settings controls menu on a Windows PC, Mac, and even your phone.

If you pass by a café that operates a Wi-Fi network, you can be identified—even if you do not carry a smartphone with you.

Wireless networking, aka wifi, revolutionised home computing. It’s the tech that enables you to walk from room to room with a ...