My take is that there were multiple holes the size of barn doors in the front end.
Namely easily hacked E-mails with critical passwords being sent in open print back and forth at the highest level of Sony,
This was followed by easy phishing among other execs for additional keys to other barn doors, all under the sleeping oversight of their IT department.
Sony and their shareholders must now pay the price
I will leave it to the rest of the IT community to check their own barndoors for sloppy folks like myself.
PS
There's money to be made by folks like Mixture