time to buy those PSN cards.

I'd back off from doing anything. The mere notion of the consequences of being caught far outweigh any material goods  I could buy. Sure, I could buy a new 72" TV...or I could spent several, several years in jail if caught. That's an *if* I'm not willing to place any bets on

I'd take 2 cents from every card, bank writes it off as accounting error and I get 1.54 million 

Honestly speaking, I would be careful, because if I had that information......damn I would be so scared that someone might know. 

I'd claim a single penny from each account.

£770,000 isn't bad for a couple days work.

Break out the abacus and start trying to decrypt the CC table?

can one person even have enough time in their whole life to chip out a single penny or two from 77 million? lol

have 2 people working on it and then youll get done is half the time!

If it takes you 30 seconds for each CC number then you would need 73.25 years doing it with nos sleep or distractions

Not that i condone any of this, but i would imagine the ones who stole it would decrypt the info and sell it to the black market. Also i dont think masses of people would find money being stolen all of a sudden because that would just raise awareness and cause people/bank to take drastic action. They will probably take their time with this.