Daemon by Suarez
Cool Tools points to a breakthrough science fiction novel and its sequel:
Every once in a while a science fiction book unleashes a vivid, important alternative vision of the future that has not been fleshed out before. Daniel Suarez does that with Daemon, a fasted-paced thriller about a world in which a virtual bot takes over. Sort of a digital Armageddon, only worse. It's a techno-thriller more informed than a Tom Clancy novel, more plausible than The Matrix, more graphic than War Games, and more thought-provoking than Neuromancer -- yet it introduces a science fiction future new to all of them.