If we are waiting for a “Cyber 9/11” or a “Cyber Pearl Harbor,” we are misunderstanding how our adversaries wage cyber warfare. This is a timely and critically important book. No other book has analyzed the threat of cyber warfare with the depth and knowledge brought to the subject by the authors. It has now become a cliché to argue that a “whole of government” or “whole of society” response is necessary to respond to this crisis, but that concept has never been more important. It will take many years and billions of dollars to even begin to secure our IT systems and prevent the slow rot that is destroying America. Using language that the layman can understand, we wish to educate Americans about what has happened and inspire them to seek solutions.