Russia-based hackers prime suspects in JPMorgan mega-breach

Zero day?

If they really believe that it's state sponsored then I'd look at the possibility that the hackers had been in the system for a long time and just decided to "grab a coke and hit the exit" because they already had everything they wanted.

Oh yea - and the JPMorgan runs on Fed Money - ROTFLMAO ... the down voters must be Bankers.

"Two possibilities here: the first is that there are missing pieces in the puzzle (ie, we are not being told everything) and second is that these were indeed politically motivated hackers,"

Or both.

The perception that depositors' assets are at risk has potentially devastating consequences for a financial institution. My personal guess is that significant losses have occurred, and I have to believe that most financial institutions have internal management controls in place to ensure that the information remains close hold. Government involvement also provides a mechanism for classification of the information for national security.

"I find it odd that someone who was actually able to break into a bank is not using it for making immediate profit."

What does "breaking into a bank's system" actually mean? Getting on to their Intranet so you can read their HR policies and company wide phone directory, and maybe the personal emails and project documents of the one or two individuals whose account you've hacked, or being able to transfer arbitrary sums of money from one account to another? Believe it or not, even people who work within a bank and have full access to their internal systems aren't able to do that!