Hard Wired

From publisher blurb:

The 21st Century. The rise of corporate nationstates has created a world in which powerful multinational zaibatsus dominate every facet of our daily lives, from the media consume to the food we eat. Powerful technologies have begun to eliminate the line between man and machine; artificial limbs, networked neural interfaces, replacement organs, silicon brains, and artificial intelligences...

In the shadow of these powerful corporate entities move the new underclass, taking what scraps of technology and wealth they can to earn a living or perhaps to strike back at their oppressors.