I heard of this gang in Sweden who planned to steal 200 million from a bank. They posed as a construction workers and started "working" in front of the bank. They reached it's telecommunication lines and they hacked in to the banks system. They then tranferred 200 million on their off-shore account. Now, transfer than big requires that the bank checks it's authenticity by calling the person who made the transfer. They intercepted the call and assured that it's a legimite transfer.
I must admit: pure genious!
Naturally, they got caught
. One of the members of the gang tipped them off to the cops and they got busted,