Decentralised, multi-stakeholder and non-linear cyber incident response with the Incident Command System

By Pukhraj Singh on 10 May 2023 @ Auscert
📊 Presentation 📹 Video 🔗 Link
#incident-management #soc #threat-intelligence-analysis
Focus Areas: 🛡️ Security Operations & Defense , 🚨 Incident Response , 🕵️ Threat Intelligence

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AI Generated Summary

The talk addresses the challenges of modern cyber incident response within complex, decentralized environments, particularly for critical infrastructure entities. It argues that traditional perimeters have dissolved due to network complexity, making incidents inherently multi-stakeholder and non-linear. This creates a misalignment between technical response (e.g., SOC, DFIR) and strategic/crisis management functions, which often operate on linear, binary models. Key problems include unclear command authority, competing objectives (e.g., business recovery vs. forensic preservation), and adversary influence on the narrative.

The proposed solution adapts established emergency management frameworks—specifically FEMA’s Incident Command System (ICS) and the UK’s Gold/Silver/Bronze command structure—to cyber incidents. The framework emphasizes modularity, standardized information interfaces, and management by objectives to integrate disparate response functions (e.g., data breach, IT disaster recovery, crisis management). It introduces a graduated command model: Bronze handles constant tactical monitoring; Silver provides risk assessment and decides between tactical containment or strategic escalation; Gold involves executive oversight for organization-wide decisions. This structure aims to maintain unity of effort while accommodating the non-linear nature of incidents and avoiding premature full-scale crisis activation.

Practical takeaways include the necessity of pre-defining decision points, information flows, and responsibilities across the incident kill chain. The framework is designed to be minimally disruptive to existing mature response teams, acting as an invisible orchestration layer. A critical operational lesson is to avoid exposing the Gold/Silver/Bronze terminology to external stakeholders or sister response teams to prevent confusion with existing taxonomies. The core implication is that without such a converged command structure, organizations risk irreversible reputational damage from uncoordinated responses in multi-stakeholder incidents.

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