Cybersecurity of Islanded Power

An islanded microgrid's controls are a cyber-physical target; protecting them is as essential to continuity as protecting the reactor.

The control system is an attack surface

A modern microgrid is a cyber-physical system: its controller, protective relays, and power electronics are computers. An adversary who compromises them can trip generation, mis-dispatch loads, or black out the installation without touching the reactor. Cybersecurity is therefore integral to resilient sovereign power.

Principles

• Isolate control networks from general-purpose and external networks.
• Authenticate and authorise every control action.
• Keep firmware and configurations under strict change control.
• Retain a manual/local fallback so the base can run if the digital layer is compromised.

Fusion-specific considerations

The burner adds safety-critical control loops — magnet, cryogenic, and plasma control — that must be protected against both malicious and accidental interference. These should be segmented from business and mission networks and designed to fail safe. A cyber intrusion must not be able to command the machine into an unsafe or self-damaging state.

Cybersecurity does not touch the plasma gates, but a resilient installation is only as available as its controls are trustworthy. Given the availability gate already in play, an avoidable cyber-induced outage is exactly what the architecture cannot afford. Security of the control layer is treated as a first-class continuity requirement.

An outage the architecture cannot afford

With an availability gate already in play, an avoidable cyber-induced outage is exactly what the installation cannot absorb. Isolated control networks, authenticated actions, strict change control, and a manual fallback keep the digital layer trustworthy. Safety-critical magnet, cryogenic, and plasma loops are segmented and designed to fail safe against both malicious and accidental interference.