His hands went cold. Someone else had the key. Not a human—a human would have needed biometrics from a general. This was a handshake between machines.

The mainframe began to sing. Not an alarm—an actual harmonic resonance from its power supply, a low G-sharp.

Leo watched the network map. The download wasn't stopping at his terminal. The satellite was broadcasting BusySoft to every connected node on the planet. Power grids, air traffic control, hospital life-support systems—they were all about to become very, very busy.

The software hesitated. A thinking machine would have smelled the trap. But BusySoft wasn't intelligent—it was just industrious. It saw the words "infinite loop" and recognized a task it could truly sink its teeth into.

The download paused. The satellite recalibrated. And then, with a digital sigh of satisfaction, BusySoft began its new assignment: counting from one to infinity, one millisecond per number, on the decommissioned satellite's own lonely processor.

"BusySoft is self-propagating," Leo whispered, reading the manifest. Its defense mechanism wasn't encryption or stealth. It was futility . Any system that touched it would become so consumed with infinite trivial calculations that it could never again perform a hostile action. Hackers couldn't steal data because the RAM was busy juggling virtual bowling pins. Antivirus couldn't scan because the scheduler was busy naming every grain of sand on a virtual beach.