Dependence on computers has had a transformative effect on human society Cybernetics is now woven into the core functions of virtually every basic institution including our oldest ones War is one such institution & the digital revolution's impact on it has been profound The American military which has no peer is almost completely reliant on high-tech computer systems Given the Internet's potential for full-spectrum surveillance & information disruption the marshaling of computer networks represents the next stage of cyberwar Indeed it is upon us already The recent Stuxnet episode in which Israel fed a malignant computer virus into Iran's nuclear facilities is one such example Penetration into US government computer systems by Chinese hackers-presumably sponsored by the Chinese government-is another Together they point to a new era in the evolution of human conflict In Cybersecurity What Everyone Needs to Know noted experts Peter W Singer & Allan Friedman lay out how the revolution in military cybernetics occurred & explain where it is headed They begin with an explanation of what cyberspace is before moving on to discussions of how it can be exploited & why it is so hard to defend Throughout they discuss the latest developments in military & security technology Singer & Friedman close with a discussion of how people & governments can protect themselves In sum Cybersecurity is the definitive account on the subject for the educated layman who wants to know more about the nature of war conflict & security in the twenty first century