Sadly this caused another bear moment in the market, coupled with the movement of the mt gox bitcoins, the timing of these events is most unfortunate. We'll just have to hope that the authorities do not uncover anything so we can all resume profitable trading again.
One thing is assured, if it's a korean news it is guaranteed to affect the market whether it is negative or positive.
What do you mean to not uncover anything? Do you think that it is not just about the current issue?
I can't think any sort of illegal activities that an exchange can do except for market manipulation and stealing customer funds.