According to Anonymous they hacked 10 Million Accounts, the 3000 of them are listed here
But according to PSN it wasn't. But the guy that hacked (so-called) said he has a 50GB Database with users e-mails and other information and he is willing to give you access to it. No obviously I sense a trap here. He can torrent the information and be done with it.
On another note, these attempts are only going to hurt the customer base the most, an Anonymous isn't something to back when it comes to taking revenge for fighting for the public, they're scumbags but just using a different cloak. It's good to fight the corporation but it's a fucking scam to exploits users accounts and CCV info instead of going after the company itself. The sad part is most morons just follow their lead and think they're doing the right thing.