Industrial Cybersecurity & OT Risk worked example

Backup Coverage Rate at 99% target ot backup coverage: a worked example

Push target ot backup coverage up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use it when checking recovery readiness for PLC logic, HMI projects, SCADA servers, historians, and engineering workstations.

The inputs for this scenario

  • Critical OT assets with verified, tested backups: 146 assets (unchanged)
  • Total critical OT assets in scope: 180 assets (unchanged)
  • Target OT backup coverage: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Backup coverage rate = critical OT assets with verified backups ÷ total critical OT assets in scope × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 81.11 % for ot backup coverage rate, the number this scenario is built around.
  • At this operating point the engine returns 17.89 points for backup coverage gap to target.
  • At this operating point the engine returns 146 count for critical ot assets with verified backups.
  • At this operating point the engine returns 180 count for total critical ot assets in scope.

How this compares with the baseline

  • Against the tool's baseline example, where target ot backup coverage sits at 95% and the headline result is 81.11 %, this scenario lands almost exactly on the baseline at 81.11 %.
  • It computes the percentage of critical OT assets with verified backups and the point gap between that rate and your target. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • OT backup coverage rate: 81.11 % (headline result)
  • Backup coverage gap to target: 17.89 points
  • Critical OT assets with verified backups: 146 count
  • Total critical OT assets in scope: 180 count

Run it with your numbers

  • Every input above is editable in the live Backup Coverage Rate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.