I have only ever tried to enter my top up card number, that failed in being accepted, so it\'s not any real concern. even if they managed to get that number, it is useless considering it expired at the end of last month.
I have only ever used the dedicated PSN cards to successfully add funds to my wallet, the last one I added was about 6 months ago and I think I have about 27p left on the last one I added.
as far as I\'m aware, you can\'t really purchase anything for 27p so I\'m not bothered.
my main worry, is that if they have personal info, how are playstaion going to respond if accounts are used to download games on other PS3\'s. I don\'t want to login to my account and find it has been locked because my DLC has been activated on the max number of systems allowed by someone who has managed to get hold of my info.
sony have fucked up big time here, they should do anything and everything to sort this matter out if it arises.