IN Brief:
- Cyber Shield 2026 involves more than 1,000 participants from US and international organisations.
- The exercise concentrates on attacks affecting power, water, and operational-technology environments.
- Defence factories need recovery plans covering machinery, utilities, industrial controls, suppliers, and physical process safety.
Cyber Shield 2026 is placing power grids, water systems, and operational technology at the centre of the US National Guard’s largest annual unclassified cyber-defence exercise.
More than 1,000 participants from 44 states and territories and 23 international partners are taking part at Camp Robinson in Little Rock, Arkansas. Running from 12 to 25 July, the exercise combines military cyber personnel with civilian specialists and uses red teams to attack representative infrastructure while blue teams defend it in real time.
The scenarios move beyond conventional office networks by reproducing systems responsible for physical services. Little Rock’s position as a regional energy hub provides a direct context, since disruption to power can affect communications, transport, water, healthcare, government, and industrial production well beyond the initially compromised organisation.
For defence manufacturers, the boundary between critical infrastructure and factory cybersecurity is increasingly narrow. Shipyards, aircraft plants, missile facilities, depots, and electronics factories depend on stable power, while many operate their own industrial-control systems for utilities, machinery, environmental conditions, and testing.
An attacker does not need to steal classified design data to halt production. Disruption to substations, plant utilities, building controls, industrial networks, or maintenance systems can idle machinery, damage work in progress, interrupt quality processes, and create safety risks.
Operational technology differs from conventional information technology because it controls voltage, temperature, pressure, motion, flow, and chemical processes. Availability and physical safety therefore carry as much weight as confidentiality, and a defensive action that is sensible on an office network may be hazardous on a production line.
Industrial equipment also remains in service for long periods. A machine tool or process controller may operate for decades with software that cannot be patched frequently without vendor support, requalification, or interruption to output.
Connecting older equipment improves monitoring, automation, and productivity, but it can expose protocols and devices designed for reliability rather than hostile networks. Security teams need to understand which connections are essential, which can be removed, and which require compensating controls.
By incorporating physical infrastructure, Cyber Shield gives participants a chance to examine the consequences behind an alert rather than treating every event as a purely digital problem. Responders must understand what a compromised controller means for pumps, switchgear, cooling, production equipment, and the people working around them.
A rapid shutdown may protect machinery in one process and damage material in another, while restoring power without checking equipment state can create uncontrolled movement, thermal stress, or unsafe pressure. Effective incident response therefore requires process engineers, operators, electricians, and maintenance teams alongside cyber specialists.
Defence factories should build the same multidisciplinary structure. Security staff can isolate networks and preserve evidence, but production engineers understand which systems can be stopped safely, how long utilities can be lost, and what checks are required before work resumes.
Recovery frequently receives less attention than detection. A company may hold backups of its servers while lacking replacement controllers, drives, engineering laptops, firmware, licence keys, or vendor personnel capable of restoring obsolete equipment.
Spare strategy consequently becomes part of cyber resilience. Long-lead components should be identified before an incident, while offline copies of software, logic, machine configurations, and calibration data need to be maintained and tested rather than assumed to work.
Supplier access creates another shared exposure. Equipment manufacturers and integrators often retain remote connections for maintenance, which can accelerate repair but also provide a trusted route into production networks if vendor credentials or support systems are compromised.
Segmentation should follow the physical process as well as the corporate organisation. A compromise in email or groupware should not provide a route into machining, environmental control, test, building management, or energy systems.
The defence industrial base also depends on utilities outside the factory perimeter. A well-secured plant cannot sustain output through a prolonged regional outage, while backup generation may support life safety and controlled shutdown rather than full manufacturing.
Exercises involving utilities, government, manufacturers, and international partners can expose those interdependencies before a real incident. They reveal where responsibilities are unclear, contact details are outdated, restoration priorities conflict, or decision-makers have never rehearsed prolonged loss of essential services.
Higher supplier-assurance requirements, including Lockheed Martin’s DCC Level 3 baseline for UK contractors, reflect growing pressure to protect controlled information. Cyber Shield extends the same discipline towards the power, water, machinery, and industrial networks that allow those contractors to produce anything at all.
Procurement can improve resilience by specifying supported operating systems, secure remote access, event logging, recovery documentation, and replaceable components when new factory equipment is bought. Retrofitting those controls after installation is usually slower and more expensive.
Lessons from the exercise will only become useful if they lead to funded remediation, tested recovery procedures, stocked spares, and engineering time to address weaknesses without undermining production schedules.
Cyber Shield 2026 treats power and water systems as national-security terrain. Defence manufacturers need the same view of their utilities and machine controls, since a compromised industrial process can interrupt military supply as effectively as a direct attack on the factory.
