The aim of this paper is to interpret the relationships between information networks and the civil wars (Colombia). Over a period of paramilitary violence networks of informants were used with a strategic purpose. In fact, the paramilitaries were preparing each slaughter counting information previously learned between the inhabitants of the town. For these reasons, it is shown that information is a key phenomenon to understand civil wars. Moreover, as demonstrated in this work is the evolution of the slaughter in the civil wars as a result of rumor and information.
