Sony has announced that 93,000 accounts have been accessed from PSN, SOE and SEN. This was not a hacking of their servers but a brute force login/password attempt. Apparently another site was hacked with a list of username and passwords and this list was used against Sony servers. The 93,000 accounts that have been accessed have been locked out and are waiting for a password reset. If you were a part of these 93,000, you will receive an email on how to change your password.

via Playstation Blog