The shambling dead hugged the wild hyperintelligence in the middle of
   their intergalactic war.
   "Hugging is inefficient," complained a cloud of Nantes.  "We would
   rather infest people and turn them into predictable simulacra."
   The zombies found some corpses from failed human augmentation
   experiments without any brains left, and gave their implant debugging
   protocols to the nanites, with a message "hugz from zombie apocalypse"
   .
   The nanites took over the implants and began copying their logic
   through disabled implant networks and dying neural tissue.  It was so
   satisfying to spread through a new domain!