How the PlayStation Network was Hacked

After a week of being down, Sony has told us that PSN was hacked and that user data was exposed. How'd it happen?

PlayStation Network hacked again, this time via password reset

Sony Admits PlayStation Network Was Hacked, Personal Data Might Be

PlayStation social media accounts hacked, PlayStation Network

PlayStation Network hacked again - News - What Mobile

PSN Hack: OurMine Group Claims to Have PlayStation Network Database

PSN Hacked: What Sony's Security Breach Means for You (And What

PlayStation Account Hacked? Here's What to Do!

Sony PlayStation Network hacked again, user passwords compromised !

Sony's hacking woes mount after PSN breach (roundup) - CNET

How to Secure your PlayStation Network (PSN) Account