Sony knows too well they can't put the genie back in the bottle, so her efforts are probably to scare people in ever doing it again.

Her efforts in grabbing the hacker and his group are so fierce it's almost hilarious. Does it expect it to succeed? I honestly doubt it, but it have the laywers, may as well use them.

If anything, may scare someone to try to do it in the future, but I guess hackers will always be hackers and Sony reaction may even given them some extra incentive.