ISACA Launches Security Debt Index to Quantify Enterprise Cyber Risks
Event summary
- ISACA introduced the Security Debt Index (SDI) model on May 20, 2026, to help organizations track and manage security debt.
- The SDI model evaluates security debt across three dimensions: severity, duration, and velocity.
- ISACA's white paper outlines best practices for mitigating, transferring, or accepting security debt.
- The SDI is designed to complement existing risk ratings and provide directional indicators for decision-making.
The big picture
As businesses increasingly adopt cloud technologies and AI, security debt—accumulated risk from outdated systems and unpatched vulnerabilities—poses a significant threat to enterprise resilience. ISACA's SDI model aims to provide a standardized way to measure and manage this risk, addressing a critical gap in current cybersecurity frameworks. The model's success will depend on its ability to integrate with existing governance structures and provide actionable insights for decision-makers.
What we're watching
- Adoption Pace
- How quickly enterprises will integrate the SDI model into their existing risk management frameworks.
- Regulatory Alignment
- Whether the SDI model will align with evolving regulatory expectations for cybersecurity.
- Impact on Governance
- The extent to which the SDI model will influence board-level discussions on cybersecurity posture.
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