111w ago - Update: IGN now reports that Sony stated the following regarding the Anonymous Hacker Group's actions, to quote:

"We are currently investigating, including the possibility of targeted behavior of an outside party. If this is indeed caused by such an act, we want to once again thank our customers who have borne the brunt of the attack through interrupted service. Our engineers are working to restore and maintain the services, and we appreciate our customers' continued support."

Shortly following, PlayStationLifeStyle.net reported that Sony has enlisted a DDoS Defense Firm to combat the hackers.

Today Wired reports that an anonymous hacking group originating from the 4Chan board has has officially declared war on Sony for alleged abuse, victimisation and privacy violations in the legal action against a group of PS3 hackers.

Sony's Sr. Director of Corporate Communications & Social Media Patrick Seybold has confirmed that PSN has been experiencing intermittent service...[/U]