Industrial Cybersecurity & OT Risk calculator

Ransomware Exposure Cost Calculator

Use this calculator to estimate the operational exposure from a ransomware scenario affecting OT or adjacent manufacturing systems. The focus is defensive planning: recovery cost, lost production, containment work, and business interruption assumptions.

What this calculator does

  • Estimate ransomware exposure cost for OT operations using affected recovery units, cost per unit, expected scope, and fixed response costs.
  • Use it to quantify defensive planning exposure for backup, recovery, segmentation, and incident response investment decisions.
  • The result estimates business exposure for a defensive ransomware planning scenario.

Formula used

  • Variable ransomware exposure cost = affected OT recovery units × cost per affected recovery unit × scenario scope included
  • Total ransomware exposure cost = variable ransomware exposure cost + fixed ransomware response cost

Inputs explained

  • Affected OT recovery units: Count PLC projects, HMI stations, SCADA servers, engineering workstations, production lines, or recovery work packages in scope.
  • Cost per affected recovery unit: Include restore labor, validation, lost production, vendor support, replacement hardware, and controlled restart effort per unit.
  • Scenario scope included: Use the probability weighted or affected share of the site, fleet, line, or business unit under review.
  • Fixed ransomware response cost: Include incident command, legal, communications, forensic support, temporary operations, and crisis recovery coordination.

How to use the result

  • Use it to compare backup coverage, network isolation, recovery testing, and response readiness investments.
  • It does not provide attack guidance and does not predict whether an incident will occur.

Common questions

  • What is the ransomware exposure cost calculator for? It estimates operational cost exposure from a ransomware scenario affecting OT or manufacturing systems.
  • What information should I enter? Use affected recovery units, cost per unit, scope percentage, and fixed response cost.
  • What does the result tell me? The result supports business cases for backup, segmentation, monitoring, recovery drills, and incident response readiness.
  • When is the result only an estimate? It is only an estimate when recovery scope, downtime impact, insurance coverage, or support cost is uncertain.

Last reviewed 2026-05-12.