> "reviews" Do you really think we can sign off on a 100 billion-element analog circuit gifted to us by a malicious adversary? We can't even keep our own CPU'

> "reviews" Do you really think we can sign off on a 100 billion-element analog circuit gifted to us by a malicious adversary? We can't even keep our own CPU's reliably free of security exploits (Spectre/Meltdown and family); and the only "adversary" there is plain bad luck. Not an active adversary. Yet, all the engineers at Intel/AMD put together couldn't uncover those things before launch. I emphasize analog because there's classes of circuit bugs (like Rowhammer) where the digital net is correct, and it's weird physics in the analog world that allows privilege exploits, by actors who know where the analog assumptions break down. There was a researcher a few years back—I wish I remembered who it was, there was an HN thread—that demo'd a simple digital circuit with analog gadgets that completely changed what the circuit did, and which were so insidious no human would ever find them.