'It would be considered as an [incentive] to terrorism and would give precise ideas to terrorists on the know-how (the methodology) and the details regarding the USA (but also how to find weaknesses in other countries).
Should we really believe that the so called terrorists don't already know what he's talking about? And why should we believe that, just because it hasn't been exploited on a large, TERRORIST, scale?
I mean, be them terrorists, but very likely, they're not stupid. If he in 4 months "discovered" this, I see nothing keeping some bright young hacker with a strong motive from finding this out too.