Sony’s Chief Information Security Officer has revealed there have been multiple attempts to access the company’s network database, and that possibly 0.1% of Sony accounts may have been affected. The CISO also suggested that data from other companies including paired user IDs and passwords were used in mass to attempt to access Sony’s Networks.
In the officer’s own words, “We want to let you know that we have detected attempts on Sony Entertainment Network, PlayStation Network and Sony Online Entertainment (“Networks”) services to test a massive set of sign-in IDs and passwords against our network database.”
Those accounts that were accessed have been temporarily locked, but Sony assures and credit card information associated with the accounts have not been compromised. Sony is requiring those affected to do a secure password reset.
Source: Sony Blog