Also interesting are the other three blog entries, particularly "Entropy Attacks!" that talks about how hashing RDRAND into an entropy pool right before using i

Also interesting are the other three blog entries, particularly "Entropy Attacks!" that talks about how hashing RDRAND into an entropy pool right before using it (an obvious use that seems like a good idea) could, with a malicious implementation, cause a lower entropy output that would reveal your DSA private key...