serious problem about inetrnet connection
Iam using a local lan for internet connection and i have got a problem yhat another user who connected to the net through the same lan my subscription is unlimited and his subscription is only 80 hrs per month he is a doctor once ago i gave him my password now by using firewall softwares he entering the net through my ip address and utilising my connection and ip address i have contacted the local lan provider then he changed the password of my ip then also he entrying by using some software please help me how to avoid him .
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