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Why the residual risk heatmap and donut chart may differ in Hyperproof

This article explains how residual risk is calculated in Hyperproof and why the heatmap and donut chart on the Risk Register dashboard may display different values.

Taylor Marchman avatar
Written by Taylor Marchman
Updated over 3 months ago

How residual risk is calculated

  • Residual risk = Residual likelihood × Residual impact

  • Residual likelihood and impact are typically calculated based on:

    • Linked controls

    • Defined mitigation percentages

    • Control health status

  • You can manually override:

    • "Residual likelihood and impact" - Hyperproof will recalculate residual risk.

    • "Residual risk" - Hyperproof will not recalculate likelihood or impact.

Why the visuals might differ

Residual heatmap: Residual likelihood × Residual impact (plotted values)



Donut chart: Final residual risk count (calculated or manually overridden)



When values match

  • If residual likelihood and/or impact are changed (manually or via controls mitigation), the heatmap and donut chart stay in sync.

When values differ

  • If you manually override the residual risk (but not likelihood/impact), the donut chart reflects the override, while the heatmap still uses the original plotted values. This causes a mismatch between charts.

Example

Imagine a risk with:

  • Residual likelihood: Medium

  • Residual impact: High

  • Residual risk (calculated): High

Scenario 1: No manual changes

  • Both the heatmap and donut chart show the risk as High. Everything is in sync.

Scenario 2: You change the residual likelihood to Low

  • Hyperproof recalculates: Low × High = Medium

  • Both visuals now show the risk as Medium

Scenario 3: You manually override the residual risk to Very High

  • Residual likelihood and impact remain Medium and High

  • Heatmap still plots the risk as High (based on Medium × High)

  • Donut chart reflects the manually overridden Very High risk value

  • Result: The heatmap and donut chart now show different values

Note:

  • To keep the heatmap and donut chart aligned, adjust the residual likelihood and impact instead of directly overriding the residual risk.

  • If you have to adjust the residual risk more often, check the residual risk heatmap configuration and correct it as needed.



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