My point was: you cannot simply just like that loose money without any trace of what happened... it's not like you can just "DELETE FROM accounts" and it is totally un-tracably gone.
I would trust more in the people who design our SWIFT and other transaction systems.
I wouldn't. After seeing such tremendous security accumen from CitiGroup, I wonder how you can blindly trust.
But the larger point is, even if you can mostly undo the damage, you have a much harder time restoring trust. The money doesn't need to be lost. If you create enough of a panic to trigger a run on banks, you've achieved your goal, too.
Which is enough to cause tremendous damage. And a way more likely scenario.