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Since emerging in academic literature in the 1990s, definitions of ‘cyber war’ and cyber warfare’ have been notably inconsistent. There has been no research that examines these inconsistencies and whether they can be resolved. Using the methodology of discourse analysis, this thesis addresses this research need. Analysis has identified that the study of cyber war and cyber warfare is inherently interdisciplinary. The most prominent academic disciplines contributing definitions are Strategic Studies, Security Studies, Information and Communications Technology, Law, and Military Studies. Despite the apparent definitional uncertainty, most researchers do not offer formal definitions of cyber war or cyber warfare. Moreover, there is little evidentiary basis in literature to distinguish between cyber war and cyber warfare. Proximate analysis of definitions of cyber war and cyber warfare suggests a high level of inconsistency between dozens of definitions. However, through deeper analysis of both the relationships between definitions and their underlying structure, this thesis demonstrates that (a) the relationships between definitions can be represented hierarchically, through a discourse hierarchy of definitions; and (b) all definitions share a common underlying structure, accessible through the application of a structural definition model. Crucially, analysis of definitions via these constructs allows a foundational definition of cyber war and cyber warfare to be identified. Concomitantly, use of the model identifies the areas of greatest interdefinitional inconsistency and the implications thereof and contributes to the construction of a taxonomy of definitions of cyber war and cyber warfare. Considered holistically, these research outputs allow for significant resolution of the inconsistency between definitions. Moreover, these outputs provide a basis for the emergence of dominant functional definitions that may aid in the development of policy, strategy, and doctrine.

Among the most recent evolutions of jihadi terrorist tactics in the West has been the rise of the virtual entrepreneur. The increased use of social media, often paired with applications that ofer the option of encrypted messaging, has enabled members of groups like the Islamic State to make direct and lasting contact with radicalized Americans. In some cases, these individuals direct terror plots, and in others, they provide encouragement and motivation for attacks. In the United States, there are 14 known cases of terrorist-related activity involving 19 U.S.-based individuals where the involvement of an Islamic State virtual entrepreneur has been documented. This outsourcing of terrorism has been a game changer in Islamic State eforts to attack the West.

Much qualitative research has drawn an association between social media and domestic terrorism, with the studies reaching different conclusions. However, few empirical studies have evaluated whether the surge in social media participation affects domestic terrorist events. Controlling for common explanations in the literature, we conduct a cross-national, time-series analysis of up to 151 countries from 2000 to 2019 to assess the impact of social media penetration on domestic terrorism. We find that greater social media penetration increases the likelihood of domestic terrorism in countries as it supports extremists’ ability to recruit, mobilize, and train terrorists. Using mediation analysis, we also find that greater social media penetration amplifies online and political polarization, increasing the likelihood of domestic terrorism events. Our work indicates the possible mechanisms linking social media and domestic terrorism and the need to develop and apply appropriate counterterrorism strategies to mitigate terrorist operations.

This report hopes to contribute to developing research in the ever-evolving arena of radicalisation with a particular focus on the role of the Internet. Our aim is to provide a resource for both policy makers and practitioners that offers an in-depth insight into the means by which extremists use online tools to propagandise and recruit. While previous research has focussed on specific aspects of this phenomenon, this report aims to provide a comprehensive analysis encompassing both qualitative and quantitative methods. It is also unique in that it offers a detailed and practical guide on how to turn the tide against extremists online and reclaim the Internet. Our research would not have been possible without the cooperation and assistance of colleagues, experts, mentors and focus group participants. In particular, we would like to thank our research assistants Ariana Skipp and Aimee Gentry who diligently collected data transcribed interviews and proofread drafts. We would also like to thank Jonathan Russell, Usama Hasan, Faisal Ghazi, Verity Harding, Florian Maganza and Benoit Tabaka for their support, assistance and guidance.

The terrorist attack in Christchurch, New Zealand is a landmark in far-right terrorist behaviour within the Asia Pacific (APAC) region. The Australian far-right terrorist held both domestic and transitional connections to other far-right extremist groups and travelled extensively before committing the attack in New Zealand. The assailant’s proficiency with weaponry and technology is considerable, as is his relationship with the online far-right community. However, little discussion is made about this incident as an evolutionary step for far-right terrorism and how it could impact the region. Accordingly, this article examines the Christchurch far-right terrorist attack, how this attack may impact the future of far-right terrorism and what are the responses to the attack by politicians and tech companies. The article finds the assailant’s behaviour significant for far-right terrorist behaviour in the APAC region with the potential for mimetic instances in the region.