Not all of them . I had to change mine personally as did the other half . Neither of us received any information from anyone aside from Sony themselves.
On a side note BOTH parties are to blame . I'm pretty pissed of at whatever fking group did this. I"m NOT a GD pawn for anyone aside myself . I'm pissed at Sony for dropping the ball in the 1st place . One thing I do KNOW thought is NOTHING on the web is safe. If you use it it's a calculated risk you are taking with ANY COMPANY.
Has this made me Leary to purchase anything via internet...you bet your ass . If i can avoid doing so I will . And the OP was right about them having to build back up consumer trust. Id much rather call them on the phone to purchase something than to use PSN.