Industrial Cybersecurity & OT Risk worked example

OT Downtime Cyber Loss at 69% share of ot production scope affected: a worked example

This scenario runs the ot downtime cyber loss calculation on the strong side: 69% share of ot production scope affected, with every other input held at its documented default. Use it when a plant needs a defensible downtime exposure number for OT security planning, risk reviews, or resilience investment.

The inputs for this scenario

  • OT downtime hours from the cyber event: 16 hr (unchanged)
  • Production margin lost per hour of OT downtime: 18,500 $ / hr (unchanged)
  • Share of OT production scope affected: 69 % (raised for this scenario; the documented default is 60)
  • Fixed cyber recovery and incident response cost: 35,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable OT downtime cyber loss = OT downtime hours × production loss per downtime hour × affected OT production scope) to the inputs above produces each figure below.
  • At this operating point the engine returns 239,240 $ for total ot downtime cyber loss, the number this scenario is built around.
  • At this operating point the engine returns 14,952 $ / hr for production loss per downtime hour.
  • At this operating point the engine returns 204,240 $ for variable ot downtime cyber loss.
  • At this operating point the engine returns 35,000 $ for fixed cyber recovery and response cost.

How this compares with the baseline

  • Against the tool's baseline example, where share of ot production scope affected sits at 60% and the headline result is 212,600 $, this scenario comes in 12.53% above the baseline at 239,240 $.
  • Use it when scoping a ransomware or OT compromise scenario, justifying segmentation/backup spend, or sizing cyber insurance limits and retentions. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Total OT downtime cyber loss: 239,240 $ (headline result)
  • Production loss per downtime hour: 14,952 $ / hr
  • Variable OT downtime cyber loss: 204,240 $
  • Fixed cyber recovery and response cost: 35,000 $

Run it with your numbers

  • Every input above is editable in the live OT Downtime Cyber Loss calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.