Stealth spoof — detection replay The slow sideways drag: the attack that walks an unprotected drone off course with no alarm.

What this is — and what it proves Built from Nodus Fortis's validated closed-loop simulation against a real flight-controller stack. The figures shown — sever time, cross-track error, drift distance, doubt level — are measured simulation results, not artwork. It demonstrates that the detection logic works: it catches a stealth attack in seconds and stays silent on a clean flight. It is not a claim about the physical board, which is pending bench validation. The path geometry is drawn to scale from the measured endpoints; time is compressed for viewing.