The government still doesn't know exactly what data he walked off with. And while you'd think they'd have stepped up security since then, now Harold T. Martin has again walked off with terabytes of secret data. In both cases, these secrets were stolen by contractors, not even full employees.
I have full admin rights to every server at work, but I can't gain access to customer data without tripping access alarms that notify our security team. How is it possible that the NSA has no similar controls? I realize that such controls can be expensive (in direct costs and ongoing operations), but "with great data comes great responsibility", and if there's any database in the country that needs exceptional controls, it's the NSA's database that is much more valuable than any other corporate database.
How many foreign powers have walked off with even more data undetected because they aren't going to publicize it -- they are likely siphoning off data right now, and the NSA has no idea.