Bitcoin HEISTS: Has USD, EUR, etc ever been stolen from an exchange?
Someone that gains access to an exchange's system has several options:


transfer out BTC
transfer out fiat
manipulate/corrupt the exchange


Option 1 is fairly trivial to do nearly anonymously. Governments and lawyers are good at tracking down people that take option 2. Option 3 isn't the most straightforward way to profit.

Why would anyone take the risks with #2 instead of just doing #1?