From the two-time Booker Prize winner: a masterful, exceedingly timely new novel--at once dark, suspenseful and seriously funny--that takes us on a journey to the place where the cyber underworld of radicals and hackers collides with international power politics.      When an internet virus throws open the gates at thousands of American prisons, the hacker turns out to be an unlikely young Australian woman. Has she declared cyber war on the United States or was her "Angel Wor