It could very well be an inside job. In some cases 'hacked' exchanges (Bitfinex is one of them) show shady behavior prior and after the 'hack'. In this case I can't judge on how it was behaving prior to the hack as I honestly didn't know this exchange before articles about a hack started to pop up. Either way, the customers are always the victim. It will take years before they get a full refund (assuming this exchange doesn't break their promise). Sad reality.