"Q.6 Does that mean all users’ information was compromised? Tell us more in details of what personal information leaked.
In terms of possibility, yes. We believe that an unauthorized person has obtained the following information that you provided: name, address (city, state/province, zip or postal code), country, email address, birthdate, PlayStation Network/Qriocity password, login, password security answers, and handle/PSN online ID. It is also possible that your profile data may have been obtained, including purchase history and billing address (city, state/province, zip or postal code). If you have authorized a sub-account for your dependent, the same data with respect to your dependent may have been obtained. If you have provided your credit card data through PlayStation Network or Qriocity, it is possible that your credit card number (excluding security code) and expiration date may also have been obtained"
So, they cannot rule out the possibility that your credit card number is compromised. Better be alert and monitor your credit card bills. Also, it doesn't say anything about social security numbers. Oh, and better also check that you're not using your PSN password elsewhere.