Once an exchange has been hacked, it becomes very difficult to trust its security in future again. At least for a long while.
What a nonsense...wish it was true, then people would not trade at lousy exchanges like poloniex, cryptopia, yobit etc. And those exchanges would not have any right for existence.
Most of my coins are stolen at centralized exchanges (cryptsy and poloniex), because i was so naive that I thought that I could trust my coins there.
Still wonder why poloniex is running, while my ticket which I raised 6 months ago is still "under investigation".
I have learned the hard way, and I consider my coins only safe in my hardware wallet, and change or trade my coins only at decentralized exchanges (like etherdelta or shapeshift).