with the amount of data that was grabbed I am leaning more towards the pathetic network security that Sony was using.
It still takes a semi talented hacker to break in to corporate servers but still, data troves of this magnitude should never be available for a hacker to grab. It's like they hosted everything on one big server with no encryption to speak of.
What's pathetic is that they were able to grab such a large amount with no one noticing. Either their network engineers are super retarded and just didn't notice that terabytes of data were being downloaded by an unknown IP or it was an inside job, which is also very likely.