Update on PSN Password Reset Process (now fixed)
blog.us.playstation.com
blog.us.playstation.com
I suppose that if your system is vulnerable to a "URL exploit" that's not _technically_ a hack in the strictest sense of the word, but the barn door was still wide open for the possibility of their system being hacked, so I don't see how there is any meaningful difference.
There's clearly a difference in getting hacked and closing a hole.