I noticed my modem and router lights are busy all the time. Somebody is using my wi-if without my authorization. But is that possible since I do not have a password ? You need a password to get in. Well I do not use password but my system is locked to all wi-fi So how does my wi-if devices gets in. I program the device MAC serial number into my router. So the router will allow only those MAC address serial authorized. But my modem and router are still busy. That’s not possible ? Next step I looked at the router diagnostic log report. Lo and behold my Samsung wi-if smart TV was online to many website. So I disallow Samsung smart TV wi-if access. Point, it can happen to any smart device.