Enhancing Cyber Threat Intelligence (CTI) Exchange: A Governance Model for the DYNAMO Platform

Abstract

The growing complexity of cyber threats, especially within critical infrastructure sectors like healthcare, energy, and maritime, highlights the need for comprehensive frameworks to facilitate the exchange of Cyber Threat Intelligence (CTI). This paper presents a CTI Exchange Governance Model aimed at enhancing the CTI sharing process within the DYNAMO platform, a European Union initiative focused on improving resilience against cyber threats across various phases of the resilience cycle: Prepare, Prevent, Protect, Respond, Recover, and Learn & Adapt. The DYNAMO project provides a suite of tools and strategies to support organizations in critical sectors, enabling efficient threat detection, mitigation, and response while fostering collaboration and compliance with regulatory standards. Sector-specific scenarios have been developed to address unique vulnerabilities in areas like healthcare, energy, and maritime, ensuring practical and targeted solutions for improving cyber resilience. While DYNAMO’s integrated tools handle CTI generation and alerts, a standardized and cohesive framework is still needed to guide and streamline CTI sharing across sectors, addressing gaps in current practices that impact interoperability and timely response. This governance model is structured around five key pillars: Collaboration & Trust, Data Sensitivity & Standardization, Compliance & Regulatory Alignment, Real-Time Collaboration & Response, and Continuous Learning & Improvement. These pillars ensure a secure, standardized, and compliant approach to CTI exchange, particularly in sectors vulnerable to increasingly sophisticated attacks. The model is uniquely tailored to align with DYNAMO's mission, offering a sector-specific approach while integrating best practices from established cybersecurity frameworks. The model is operationalized through the DYNAMO platform, leveraging tools like the Early Warning System (EWS) for real-time CTI sharing and a Data Anonymization Tool to ensure privacy and regulatory compliance. As a result, a practical framework has been developed to tailor the model’s implementation across healthcare, energy, and maritime sectors, ensuring a scalable and adaptable approach to CTI sharing. Ultimately, the governance model enhances CTI exchange by addressing interoperability challenges and strengthens governance practices to support collaboration, improve incident response times, and foster continuous improvement.