Hardwired — Walter Jon Williams

Mudboys, dirtgirls, zonedancers, buttonheads. Gravity-well dirt beneath the Orbital platforms which control their world. But the underground and the underworld declare war against the Orbital Heaven: in the air with delta fighters and military shuttles, in the interface of computer fraud and data flow, in flooded slum alleys with lasers and bombs. It's a war with new warriors, new legends.