Walls: Exodus 24 - The Planetary Disciples
A nanite plague wiped out or turned the societies of earth into a mindless menace referred to as the lusus. a single glimmer of society still exists on an island to the north.
Toronto City Wars: Warp vs. Bantam Beaver
"even if the yakuza managed to buy the nanites - which would be astronomically expensive, they'd have to program them for their intended purpose and that takes nasa levels of coding."
Episode 3C: Kill the Moon
However, a swarm of repair nanites quickly patched it. the leak was repaired and the light extinguished. a few minutes passed and it happened again, although the hole was slightly bigger this time, if only by a few microns.