Industrial Cybersecurity & OT Risk worked example

Backup Coverage Rate at 68% target ot backup coverage: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop target ot backup coverage to 68%, then walk the calculation through step by step. Calculate the share of critical OT assets with current, restorable backups compared with a target coverage rate.

The inputs for this scenario

  • Critical OT assets with verified, tested backups: 146 assets (held at the documented default)
  • Total critical OT assets in scope: 180 assets (held at the documented default)
  • Target OT backup coverage: 68 % (the input this scenario stresses; the baseline uses 95)

Working through the calculation

  • The calculation starts from the formula this tool documents: Backup coverage rate = critical OT assets with verified backups ÷ total critical OT assets in scope × 100.
  • OT backup coverage rate works out to 81.11 % at these inputs, and this is the headline figure for the scenario.
  • Backup coverage gap to target works out to -13.11 points at these inputs.
  • Critical OT assets with verified backups works out to 146 count at these inputs.
  • Total critical OT assets in scope works out to 180 count at these inputs.

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 %.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to target ot backup coverage, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It measures coverage breadth, not backup quality — it does not capture recovery time, backup age, or whether the backups are isolated from the same ransomware that hits production.

Results at a glance

  • OT backup coverage rate: 81.11 % (headline result)
  • Backup coverage gap to target: -13.11 points
  • Critical OT assets with verified backups: 146 count
  • Total critical OT assets in scope: 180 count

Run it with your numbers

  • To rerun this with your own numbers, open the live Backup Coverage Rate calculator, set target ot backup coverage to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.