The Matrix is inhabited by The Resonance and Resonance-powered beings, like sprites and technomancers. Just like magic has an alternate, Corruption, Resonance has Dissonance. Dissonance sprites and technomancers tend have dark and often insane goals, like taking over the Matrix, deleting all knowledge, or corrupting sprites, files, and technomancers for no other purpose than spreading Dissonance.
Unlike Magic and Corrupt Magic, the Resonance and Dissonance are more or less at war in the Deep Matrix and the Resonance realms.