It's also interesting that this utterance by Sony has shifted the whole discussion away from their own security failures.
Sony, in blaming Anonymous, has asked theem to prove a negative -- that they did NOT hack PSN. The onus isn't on anonymous to prove a negative. Sony knows they can't. It's just an effective way to shift focus on this issue away from their failure to protect customer data.
This is the most frustrating part of the whole debacle. Sure - whoever hacked PSN carries blame, but an equal amount of blame lies directly on Sony's shoulders for not putting adequate protections in place.
Sony, in blaming Anonymous, has asked theem to prove a negative -- that they did NOT hack PSN. The onus isn't on anonymous to prove a negative. Sony knows they can't. It's just an effective way to shift focus on this issue away from their failure to protect customer data.