dont use default anything, use the same ports xbox live or playstation network use (as long as you dont actually use those services yourself) use a port that video streaming or conference calling via webcam would use
any person who has a fair bit of traffic on port 12000, its not hard to see theyre using cccam for a share, and if thats left on default, then the receiver password probably is as well, so the isp will log through your router, and just take your cccam.cfg
reverse lookup the dns address of the server you connect to, use the authorities to then take the server, along with the details of everyone who connects to it, they then look up the IPs of all the connections and it starts all over again
DONT USE DEFAULT ANYTHING!!!!!
and if you have a dodgey modem ?.