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 social media accounts hacked, PlayStation Network

PlayStation Network Hacked, Personal Info, Credit Card Numbers

Sony PlayStation Hack: What We Know So Far About the LAPSUS

The PSN Hack: It Only Exposed Everything

PlayStation Network Hack Leaves Credit Card Info at Risk

OurMine group claims it hacked PlayStation's social media accounts

TECH: Playstation hacking timeline infographic

PSN Hack: OurMine Group Claims to Have PlayStation Network Database

Sony: PlayStation User Data Hacked

How to Recover Your Hacked PS4 Account with CHANGED EMAIL or 2

How to Secure your PlayStation Network (PSN) Account