I have a WeMo and it works. I don't understand this hijack. Do users need access to my WiFi (or breach perimeter) first and take control? It is a classic secur

I have a WeMo and it works. I don't understand this hijack. Do users need access to my WiFi (or breach perimeter) first and take control? It is a classic security/ease of use trade off, at the moment, anyone who has the app installed can take control of the device if they are on the same WiFi network. This control is retained if the user leaves the WiFi network. This is a helpful feature that can be a security risk.