A documented incident response plan is essential, but it doesn’t guarantee readiness. Incident response drills and exercises validate whether your team can execute that plan under real-world conditions, where decisions must be made quickly and operational impacts are immediate.
In operational technology (OT) environments, cybersecurity incidents aren’t confined to data loss. They can disrupt physical processes, impact safety systems, and halt production. Effective response depends on how well teams perform under pressure, not just how well procedures are written.
Organizations frequently uncover critical gaps during incident response exercises, including unclear decision authority, breakdowns between IT and OT teams, impractical response steps, and recovery strategies that have never been fully validated. For this reason, industry guidance and regulatory frameworks increasingly require routine drills and exercises as part of a mature incident response program.
Our Approach
Armexa designs and facilitates incident response drills and exercises built around the realities of industrial operations. The focus is on testing decisions, coordination, and recovery not just rehearsing static procedures.
We support a range of formats, from targeted operational drills to scenario-driven tabletop exercises and full-scale simulations. These activities are typically performed on a recurring basis, with frequent drills supported by periodic, larger-scale exercises to validate overall readiness.
Each is tailored to the client’s environment and incorporates real-world threat scenarios, such as ransomware, loss of control system visibility, or compromise of remote access pathways, designed to challenge assumptions and expose gaps in detection, response, and recovery.
Facilitators actively guide each session, introducing new developments and constraints as the scenario evolves. This creates a dynamic environment that reflects the uncertainty and pressure of an actual incident.
Armexa’s planning and facilitation offerings include:
Drills:
A coordinated, supervised activity typically used to test a single, specific operation or function within one entity. Under the Maritime Transportation Security Act (MTSA), a drill is defined as a training event that tests at least one component of a vessel or facility security plan and is used to maintain a high level of security readiness (33 CFR § 101.105). Because drills are narrow in scope, MTSA-regulated facilities must conduct them at least quarterly (33 CFR § 105.220), far more frequently than full exercises, to keep individual controls continuously validated.
Exercises:
Participation spans operations, engineering, cybersecurity, IT, legal, and executive leadership, ensuring cross-functional coordination is tested under realistic conditions. Exercises emphasize key decision points, including when to declare an incident, how to balance containment with operational continuity, how to escalate internally and externally, and how to prioritize recovery actions. For exercises, the MTSA requires at least once per calendar year, with no more than 18 months between exercises
Functional Exercise (FE): Examines validates the coordination, command, and control between multi-agency coordination centers (e.g., emergency operations center, joint field office). It’s a role-playing exercise: participants respond in real time to a realistic, evolving scenario, acting out their actual coordination and decision-making roles, while a simulation cell injects scenario events and plays the part of outside entities. Because resource deployment is simulated rather than physical, a functional exercise does not involve actual “boots on the ground.”
Tabletop Exercise (TTX): Key personnel discuss simulated scenarios in an informal, low-stress setting rather than acting them out in real time. TTXs are used to assess plans, policies, and procedures, and to surface gaps in coordination. Armexa facilitates several formats: sessions focused on technical staff, sessions focused on executive leadership, or a combined session that brings both groups together to work through the same scenario.
Planning
- Documented plans
- Assumed readiness
- Unverified coordination
Drills
- Narrower security control scope
- Often limited cross-functional involvement
- Run more frequently
Exercise
- Real-world scenarios
- Executive decision pressure
- Cross-functional coordination
Findings
- Decision authority gaps
- Communication breakdowns
- Regulatory uncertainty
Outcome
- Aligned leadership decisions
- Clear escalation paths
- Proven response capability
Results and Benefits
Incident response exercises deliver evidence-based insight into how your organization will actually perform during a high-consequence cyber event, revealing coordination gaps across IT, OT, and business teams that documented plans alone can’t show.
Benefits and results:
- Reveals hidden gaps — exposes misalignment across IT, OT, and safety leadership, unclear escalation paths and decision authority, and confusion around regulatory notification and external communications before a real incident hits.
- Builds executive clarity — leadership gains a practical understanding of how governance functions under pressure: who decides, how fast, and how safety, operations, and business priorities get balanced.
- Strengthens cross-functional coordination — aligns operations, engineering, cybersecurity, legal, communications, and executive leadership on roles and communication flows, reducing delays and conflicting actions when time matters most.
- Produces actionable outcomes — findings convert into prioritized actions that sharpen incident response plans, refine governance, and shift the organization from theoretical compliance to demonstrated capability.
Work with Armexa to evaluate your readiness, uncover critical gaps, and build confidence in your organization’s ability to respond.
