I am always skeptical of these alleged hacks that happen in exchanges. maybe because most of them were fake anyways. fake in the sense that the exchange lied and they stole the money themselves and never paid the users back. they sometimes do it because they run out of money because they make bad bets on the market and get dumped on during the market crash or something like that.

ps. change your title to something like BitGrail got hacked. "again" means nothing!