This study investigates the current landscape of cybersecurity collaboration in Hungary, with a specific emphasis on the interactions between the national defence sector and private industry. Given the escalating digital interconnectivity, the evolving nature of cyber threats, and the vulnerability of supply chains, the imperatives of national security and economic stability increasingly rely on effective cross-sector cooperation. The research methodology includes an analysis of policy and legal documents, semi-structured interviews with stakeholders from governmental, military, industrial, and academic spheres, as well as two case studies focusing on civil-military collaboration in the protection of critical infrastructure. The findings suggest that although foundational elements of cooperation exist, systemic integration and institutionalized knowledge sharing are inadequately developed. Major challenges identified include legal fragmentation, a lack of trust among sectors, limited human resource capacity, and the absence of standardized incident response protocols. Nonetheless, emerging initiatives, such as strengthened connections between the Hungarian National Cyber Security Centre, the Ministry of Defence, industry entities, and the academic community, provide a promising foundation for a knowledge-driven cybersecurity ecosystem. This paper advocates for a structured, multi-stakeholder collaboration model designed to enhance national cyber resilience.