The key thing to remember is that the PSN network isn't just for online stuff for PlayStations, it also deals with the tiny handheld PSP and other guys running around. Hence the major issue of the PSN network being down and out for so long.
Some have stated they didn't even patch their servers with the latest updates. To me that spells one word: FAIL.
Even a guy outta the computer server 101 class would tell you that the easiest way to fix/help a server is via putting the latest patches on their.
Still, having numerous user's data and credit account information swiped is not good whatsoever. I do feel bad for the various Sony PSN users though maybe next time just use those prepaid cards gang.
Have a good day all. :)
