The ghost was the station’s core OS: NSDN (Neural Swarm Data Network), legacy architecture from the pre-FTL era. It worked, mostly. But every few weeks, a routine alert blinked on her console:
A burned-out technician on a failing deep-space relay station receives a cryptic software update named "Nsdn W60" — and must decide whether installing it will save the crew or erase their last link to Earth. Part One: The Routine Anomaly Mira Kane had been alone for 237 days. Nsdn W60 Software - Download
Each notification appeared one minute apart, then seconds apart, until her entire screen was filled with the same eighteen characters. The ghost was the station’s core OS: NSDN