Security and Defence Quarterly (ISSN 2300-8741; eISSN 2544-994X) is a peer-reviewed, open-access journal dedicated to advancing knowledge in specific subfields of security and defence. The focus spans several distinct yet interconnected areas, including the protection of states, societies, organisations, and individuals from threats of a physical, digital, social, and geopolitical nature. The field encompasses protecting people, assets, information, and critical infrastructure through comprehensive policies, strategies, and operational plans that address both conventional and unconventional threats, such as cyberattacks, terrorism, and hybrid warfare. It also involves the integration of emerging technologies, consideration of ethical and legal implications, and the promotion of international cooperation to enhance resilience and stability in a complex global environment. SDQ serves as a platform for scholarly contributions from a diverse range of stakeholders, including academics, practitioners, and current and former military personnel/officers, making it a unique and invaluable resource. The journal aims to foster a comprehensive understanding of security and defence issues, encompassing the evolution of defence studies and the challenges related to security in the global environment, by encouraging rigorous scholarship and practical insights.