incase you want to skip the story , just scroll down to the questions i asked. if not then.. okay here's the brief info. i got 5Mbit cable internet and 2 days ago it began to be slugish and the modem kept unsyncing from the cable all the time. the after a few minutes it synced back in , but the speed was terrificly low , that went cycling all day long, sync then unsync then sync and etc etc.. i called the cable company and asked if there is some issue with the cables in my region and they said they will check , 5 minutes later the support guy gets back to me and says that there is some weird issue with the computers and my cable modem IP and that they gonna send a technician to replace my priveous Terayon TJ 715 Cable Modem. 10 minutes ago the techinian came and replaced the modem and he told me something that made my jaw drop to the floor. he said that somebody hacked my modem from another city aperanetly because they see my IP from two different modems, one is my modem , and the other is from another city , now i wont get into details but i was investigated about beeing a part in some hacking activity by a police that is located in the same city as the IP came from. i asked him if they know the region in that city and he said the exact same region as the police's HQ located. that kinda freaked me out allot , how can they monitor me without me knowing.. well i guess the questions i want to ask are simple. 1 : how could they hack my modem and what information you think they could get. 2 : how can i protect myself and prevent them from hacking and monitoring my internet activity.