I'm deeply interested in the NSA stories, although I'm becoming fatigued by the continuous stream. Mostly I want to see meaty technical discussion of these sto

I'm deeply interested in the NSA stories, although I'm becoming fatigued by the continuous stream. Mostly I want to see meaty technical discussion of these stories, not political opinions. That fact that someone likes/dislikes NSA surveillance is uninteresting. What fascinates me, for instance: Which chips are backdoored? How is it done technically so that normal function isn't compromised? What protections are in place to stop a "fourth party" from exploiting the back door? Isn't it amazing that none of these back doors came to light via the "geek community"? Maybe it's because the chips involved are relatively rare, only used in specialized crypto hardware.