> That said, I've held that belief for over a decade and haven't had it tested. MAD was possible because both cold war adversaries could verify. Satellite phot

> That said, I've held that belief for over a decade and haven't had it tested. MAD was possible because both cold war adversaries could verify. Satellite photos and espionage kept the score and the mutual decision was "Let's not". Cyber enjoys no such legibility, so there's a very real danger that one actor thinks "We'll get away with it, they won't/can't retaliate".