my internet is slow and been over the usage past 3 months. then last night I found out someone using a ZTE mobile was on my network so i changed the password and have hidden the ssid broadcast. Im using wpa2 security as well. Today came back to a slow internet connection and did a speetest and was at .1 kbs so i immediately changed the pw and ssid name(was hidden). After i did that my speed went back to normal at 3mbps. So within 24hrs some found my pw and my new ssid even though it was hidden again!!! Any other ideas how to stop these wifi theives??? Any good programs to monitor ips connected to the network?? Please help.