The book never really delivers on the initial promise and the ending is unsatisfying. While the title hints at a cyber-thriller, that never really ends up being important to the story or really developed in a realistic way. There are just too many plot holes for me to really love this book. Cyber attacks and cyber war are happening today routinely and we know what they look like - this is not it. China even today really would not and could not invade Washington DC or the US. And no one can walk 60 miles in one day, that is just crazy. I wanted to like this at the beginning but by the end there was just too much cognitive dissonance from all of the plot holes. I am giving three stars because it was a fun ride at times, but ultimately I cannot recommend this book.