It's a MAD MAD MAD Cyber World

... defensive efficacy is a relatively constant and shared weakness across all modern great powers (whether that be the United States, China, Russia, Iran, India, Great Britain, France, etc). In other words, every state that is concerned about the cyber realm from a global security perspective is equally deficient and vulnerable to offensive attack and therefore defensive cyber systems are likely ... ... hold the same potential that made nuclear M.A.D. so effective for so long without being physically challenged through global war: at first nuclear deterrence builds off of the expected second-strike capability, of being able to survive an initial strike ...