Answer yes if your organisation has conducted OT-specific incident response exercises, tabletop scenarios, or recovery testing in the last 12 months, covering detection, response, and recovery for OT systems. Summarise the testing performed and key lessons learned in the notes or upload supporting documentation as evidence.
Having a documented OT incident response playbook is only useful if it has actually been exercised, since a plan that looks sound on paper can still contain gaps that only become apparent when people try to put it into practice. OT-focused exercises, whether tabletop discussions, technical simulations, or recovery tests, surface issues specific to this environment: whether responders understand the safety implications of isolating a system, whether the right stakeholders (engineering, safety, operations) are actually involved and know their role, and whether recovery can genuinely be achieved within an acceptable timeframe without reintroducing risk. Because OT environments, personnel, and threats change over time, a playbook or capability that was tested a few years ago may no longer reflect current reality. Confirming that OT-focused exercises have taken place within the last 12 months provides evidence that your organisation's OT incident response capability is being actively maintained and tested, rather than left untested indefinitely after its initial development.
Run OT-specific incident response exercises or tabletop scenarios at least annually, covering detection, response and recovery for OT systems specifically. You may consider running exercises more frequently for higher-risk environments or following significant change.