Zeroes

There are hackers arrested for cyber crimes but are given a choice jail or hack for the government. They need to work together to figure out what is really going on and wind up having to save the world but how are they going to do it when the computers have taken over everything. If you enjoyed the tv series Person of Interest this will really be a great read for you. It moves fast and furious. You don't know who will make to the end of the book.