No need for that. Launch an exchange, pretend that you lost x amount of coins due to a hack that happened a while ago (which gives you enough time to get rid of taint and whatnot), and there you have made yourself some quick bucks. For that reason I see operators perform an inside theft more as a serious problem than hackers. It's far too easy to walk off like nothing has happened, just like Bitfinex managed to do -- after them having compensated people on a fiat based value, people suddenly started to make use of that exchange again.... At first they were talking about how they would never make use of that exchange ever again, and now it's all fine....