When admins suspect something wrong like this, they might test you. They can often tell if it's legit by the way the player (or players) react, either as if two people, or as one guy attempting to play like two people.
I think you should expect to be tested at some point. Don't freak out when it happens. Just let them test you. Back in 2238, an admin might freeze your character on a certain hex, and start barking orders at you to do this or do that. It happened to a friend of mine because he and his sister played it in the same house. He said it scared him but they passed.