Quantitative & Qualitative
Consistent measurement
Intuitive representation
Easy adoption
Overview
The UC2 Risk Ruler is designed to simplify and enhance risk estimation by integrating both quantitative and qualitative assessments from subject matter experts.
Building on the Uniform Confidence/Certainty Estimation (UC2) framework, the Risk Ruler offers a scale that adjusts and captures the nuanced understanding of risk — making it easier to combine different types of estimates without distortion.
Key Features
Integrated Assessment
Combines quantitative data with expert qualitative judgment, creating a unified view of risk that respects both analytical rigor and practical expertise.
Confidence Tracking
Captures the level of confidence in each risk estimate, allowing you to distinguish between well-supported assessments and educated guesses.
Certainty Measurement
Distinguishes between what is known and what is uncertain, helping teams communicate not just risk levels but the reliability of those estimates.
Stakeholder Engagement
Intuitive visualization improves communication with stakeholders, making complex risk assessments accessible to both technical and non-technical audiences.
Impact Assessment Methods
The Risk Ruler supports both qualitative and quantitative approaches to impact assessment, allowing teams to work in the mode that best fits their context and available data.
Qualitative Impact Assessment
Expert-driven assessment using structured scales for scenarios where quantitative data is limited or unavailable.
Quantitative Impact Assessment
Data-driven assessment using numerical inputs for scenarios where metrics and historical data are available.
Who Should Use the Risk Ruler?
Enterprise Teams
Risk managers, security teams, and compliance officers
Risk Analysts
Professionals building and maintaining risk models
Decision Makers
Executives and leaders who need clear risk insights
How It Works
Gather Risk Inputs
Collect both quantitative data and qualitative expert assessments about the risk scenario you're evaluating.
Apply the Risk Ruler Scale
The Risk Ruler provides a uniform scale that works across different types of assessments, maintaining transparency about confidence and certainty levels for each input.
Compare and Aggregate
Compare risk estimates from diverse sources and aggregate them meaningfully. The uniform scale allows apples-to-apples comparison even when inputs come from different methods.
Communicate Results
Share results with stakeholders using clear visualizations that convey not just the risk level, but also how confident and certain the assessment is.
Why Teams Choose the Risk Ruler
Faster Consensus
Teams reach agreement more quickly when everyone uses the same scale and terminology
Better Models
Risk models improve when inputs clearly express both value and reliability
Clearer Decisions
Leadership can make informed choices when they understand estimate quality
Related Resources
UC2 Framework
Learn about the foundational Uniform Confidence/Certainty Estimation methodology that powers the Risk Ruler.
Explore UC2UC2 for CVSS
See how UC2 principles enhance vulnerability scoring with precision, maturity, and confidence visualization.
Learn MoreDownload the Risk Ruler
Get started with the UC2 Risk Ruler methodology and tools. Contact us for access to templates, guides, and implementation support.
The Risk Ruler doesn't replace your judgment — it makes your judgment visible, comparable, and actionable.