Well there aren't too many users interested in NT's tbh. We all know there are a lot of "china" farmers in asian countrys. There are a lot of hardcore players there aswell. What is there to gain being online 20h straight in BB. It's not like you can farm for anything with extra hours. There is noone to sell the accounts to, no real money to gain. Unlike WOW.
Obviously there are dishonest people in every community. Eventually they might get caught or get bored. I think the community should report those teams themselves. Sometimes those teams might be mentored. If it's a small country NT, it's really not that hard to get one of your men into that. If you think they are farming, report them or ask GM-s to monitor them.
I looked through some NT's in asia. Every player was on a legit team. About 2 players were on III div teams, but they were supporters. Who would waste money on farming? None of them were one man teams!
If you have been a few online games and have some IT knowledge, it's not really hard to "know" how to cheat. Perhaps the "English" speakers, see less of a need to cheat in an online game.