Industrial Cybersecurity & OT Risk calculator
OT Network Visibility Score Calculator
Use this calculator to score OT network visibility risk. It helps compare plants, zones, conduits, or production areas based on criticality, blind spots, and monitoring weakness so teams can prioritize defensive visibility improvements.
What this calculator does
- Rank OT network visibility using asset impact, blind spot exposure, and monitoring weakness.
- Use it when prioritizing passive monitoring, asset discovery, sensor placement, and zone visibility improvements.
- The result gives a relative score for OT visibility risk.
Formula used
- OT network visibility risk score = network visibility impact score × network blind spot exposure score × monitoring weakness score
- Use the same scoring scale across comparable OT zones or sites.
Inputs explained
- Network visibility impact score: Score the consequence of limited visibility in the zone, including production, safety adjacent operations, quality, utilities, and recovery.
- Network blind spot exposure score: Score exposure from unmanaged switches, unknown assets, flat networks, remote access paths, or unmonitored conduits.
- Monitoring weakness score: Score weakness in passive sensors, asset discovery, log collection, alert tuning, coverage evidence, and ownership.
How to use the result
- Use it to prioritize sensors, discovery work, logging, and monitoring coverage.
- It does not perform discovery or prove that a zone is monitored effectively.
Common questions
- What is the OT network visibility score calculator for? It ranks visibility risk for an OT network zone, conduit, plant, or production area.
- What information should I enter? Use impact, blind spot exposure, and monitoring weakness scores.
- What does the result tell me? The result helps decide where monitoring and asset discovery should improve first.
- When is the result only an estimate? It is only an estimate when asset inventory, network diagrams, or monitoring evidence are incomplete.
Last reviewed 2026-05-12.