An Antarctic data hack.
"Still inside the joy, he moved quickly and quietly through the cold, barren corridor, past a row of humming, refrigerated steel doors labeled 'BSL-4 Biohazard,' into the sterile, white labs. Four five-thousand-liter liquid nitrogen tanks were lined up against the wall, the tubes that fed them thick with insulation against the extreme chill of the coolant. The third vat was open and breathing ice crystals into the air. He was glad he had loaded out with a virus filter in the mask. The power was still on, so the tank might freeze again. He pushed the lid shut, holding his breath just in case."