Japanese electronics major, Sony has suspended 93,000 accounts on its PlayStation Network and other online entertainment services after it detected a large number of unauthorized attempts on the networks.

The Tokyo had quartered company had to temporarily lock about 93,000 accounts whose IDs and passwords were successfully verified by the hackers. The company has already sent email notifications and password reset procedures to the affected users PlayStation Network, Sony Entertainment Network and Sony Online Entertainment services.

Sony clarified that the credit card details linked with the accounts are not at risk and that it has"taken steps to mitigate the activity" and is also looking into any unauthorized activation accounts. Sony spokesman Sean Yoneda said that the company confirmed the attack after its security systems detected unusually high number of failed log-in attempts.

"What happened in April was a breach on our servers as we said in our announcements," Yoneda said. "But this time around, there was no intrusion on our servers. This was ... taking someone else's identity and trying to use that to access our services."

The move comes months after the company faced a large scale breach in April, which left its service offline for almost a month. Personal data from more than 100 million online gaming and entertainment accounts were compromised and the company had to compensate its users besides facing a host of lawsuits. Hackers have repeatedly targeted Sony systems since then and the company has taken down its service many times for `maintenances'.