Count Zero

Count Zero

By William Gibson

Book 2 of the Sprawl Trilogy
Reviewed by Matt Crampton
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Seven years after the events of Neuromancer, strange things begin to happen in the Matrix, leading to the proliferation of what appear to be voodoo gods (hinted to be the fractured remains of the joined AIs that were Neuromancer and Wintermute).

Two powerful multinational corporations, Maas Biolabs and Hosaka, are engaged in a battle for control over a powerful new technology (a biochip), using hackers and the Matrix as well as espionage and violence.

https://en.wikipedia.org/wiki/Count_Zero
Published in 1986