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Whitepapers

Whitepapers

Citation-grade methodology and research on software drift and security-risk scoring — the factors, data sources, and rationale behind DriftScore, RiskScore, and DriftRisk™. Open method, proprietary calibration.

Jul 10, 202615 min read

Software risk & drift scoring: a methodology whitepaper

DriftScore, RiskScore, and DriftRisk™ — the factors, sources, and rationale

How Vibgrate measures maintainability drift (DriftScore) and security exposure (RiskScore) as separate axes, then derives DriftRisk™ as an executive headline. Discloses the evidence hierarchy (observed exploitation → predicted likelihood → capped severity → context), the source→role→weight mapping, the data-source robustness posture (OSV ∪ GHSA, EPSS, KEV, NIST LEV), and the exact published formulas — the credit-bureau model of open method, proprietary calibration.

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