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?

The PlayStation Network hack: 4 ways Sony screwed up

All Of Sony Systems' Allegedly Hacked By New Ransomware Group

Sony Playstation Network Hacked Again

PlayStation social media accounts hacked, PlayStation Network

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

PSN Hacked New Orleans Saints

Someone hacked into my PlayStation account and keeps kicking me

Anonymous says it hacked 10M PSN accounts; Sony disagrees

BBC - World Service - World Have Your Say: On air at 1100GMT: Sony

Sony PlayStation Network Is Hacked Again

Sony PlayStation online store hacked

A Disaster In The Making? Sony's PlayStation Network Suffers

PlayStation Network Hacked. Again. - Panda Security