Sony said Monday that it had discovered that more credit card information and customer profiles had been compromised during an attack on its servers last week.

In a news release issued by Sony, the company said that it had discovered hackers had gained access to the Sony Online Entertainment servers, which contain approximately 24.6 million customer accounts and 12,700 credit card and debit card numbers. Sony said the hackers might have stolen this information, but the company could not be sure.

Sony Online Entertainment is a division of Sony that creates multiplayer online games for the PS3 and PlayStation Portable gaming platforms.

The announcement of more compromised customer information was another black eye for Sony, which is facing international pressure to answer questions about the attacks on its servers, and to disclose exactly how many customers were affected by the breach.

Congress has asked Sony to respond by the close of business Tuesday to several questions related to the attacks.

Sony said it had decided to shut down the Sony Online Entertainment servers and Web site so it could upgrade its servers and add more protection to the service.

Sony also noted that information taken from the entertainment division of the site included customers’ names, addresses, e-mail addresses, birth dates, phone numbers and usernames and passwords. It also said that 10,700 debit cards from users in Austria, Germany, Netherlands and Spain were compromised.

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