content: I'd hardly call myself paranoid when we consider this is essentially a black box with full access to system memory. Firmware vulnerabilities have been demonstrated in the past and I'm sure these "security" processors are not immune to the same pitfalls. This is all, of course, assuming that AMD and Intel are the only entities who will ever have access to the signing keys and that level of root system privilege is too much trust for me to put into either one. The worst part is that they take the choice away from the customer. It's "you're going to have this malfeature or else fuck you".