Though all the details behind the intrusion haven't been disclosed, this operation was plundering people's accounts for some insane amounts. And is that a hint of GTA4 I detect?

Stakeouts, Lucky Breaks Snare Six More in Citibank ATM Heist - Threat Level Blog, Wired

Three months had passed since Citibank notified the FBI that a hacker managed to steal customer-account numbers and PIN codes, in an attack on a server that processes transactions from Citi-branded ATMs at 7-Eleven convenience stores. In late February and early March, the FBI and the U.S. Secret Service arrested two Ukrainian immigrants and two alleged co-conspirators for allegedly using the stolen PINs to steal $2 million in cash from unsuspecting Citibank customers.

But the arrests didn't stop the fraud, which sprang from perhaps the most serious computer intrusion into a bank system to date. The FBI has recently made at least six more arrests in New York -- bringing the total to 10 -- thanks to information from arrested scam suspects, a lucky traffic stop, and an undercover operation that at one point had Eastern European hackers chasing a female FBI agent through the streets of New York, trying to mug her for ATM-card-programming gear.
Signs point to a third-party transaction processor as the source of the intrusion, not that it comes as much of a shock.