If you own a PlayStation and go online to play against others and download video games or movies as part of the PlayStation Network, you should check the activity of the credit card you have on file with that website.

A hacker has obtained the personal information of PlayStation Network account holders and subscribers of the Qriocity streaming service, Sony said in a message to customers Tuesday.

Sony's investigations over the past week determined that an "unauthorized person" had obtained users' names, home addresses, e-mail addresses, birth dates and passwords, according to a statement being sent to all account holders.

The attack also has crippled Sony's PlayStation Network, which has some 70 million subscribers and has been down since April 20. The network lets customers download video games from the Web and play against each other online.

"While there is no evidence at this time that credit card data was taken, we cannot rule out the possibility," said Sony Computer Entertainment and Sony Network Entertainment, which manage the two services, in a joint statement.

The hacker could have taken credit card numbers, card expiration dates, billing addresses, answers to security questions and purchase history, but not credit-card security codes, they said.

Sony is encouraging customers "to protect against possible identity theft or other financial loss" by reviewing credit-card statements. The company also suggested that some customers may want to place a "fraud alert" with credit bureaus.

Sony did not say how many accounts had been compromised. A spokeswoman declined to comment Tuesday.

via Sony: Hacker stole PlayStation users' personal info - CNN.com.