Before you join the Wi-Fi hotspot at your local cafe, you might want to make sure it won’t follow your footsteps—literally—after you leave. Ostensibly “free” Wi-Fi hotspots are in hundreds of ...

Wi-Fi capable devices, like smart phones, often automatically send out probe requests in order to detect available Wi-Fi networks in the area. These probe requests include a device identifier known as ...

How do you audit your home Wi-Fi network? Perhaps you log into your router and have a look at the connected devices. Sometimes you’ll find an unexpected guest, but a bit of detective work will usually ...