Purpose: This article analyzes how cyberspace shapes the process of digital radicalization and the development of terrorism, how cybercrime functions as a supporting means for terrorist activity, and what layered prevention strategies can address these threats.Research Methodology: This study is conceptual and qualitative, using a structured library review of peer-reviewed journals, books, legislation, and official government and law-enforcement publications, guided by an integrative synthesis rather than empirical testing.Results: Analyzed through the 3N Model (need, narrative, network), cyberspace widens the opportunity for individuals seeking significance to encounter extremist narratives and validating social networks. Analyzed through Routine Activity Theory (motivated offender, suitable target, capable guardian), cybercrime becomes part of a supporting ecosystem when technology-based offenses provide information, resources, access, or operational support, although not every terrorist use of the Internet constitutes cybercrime or cyber-terrorism.Conclusions: Countering terrorism in cyberspace should shift from a purely punitive orientation toward reducing both the radicalization process and criminal opportunities through digital literacy, counter-narratives, protective networks, capable guardianship, and cross-sector cooperation.Limitations: As a conceptual study, the integrative framework was not empirically tested and requires further validation.Contributions: The main contribution of this article is an integrative conceptual framework linking radicalization as a process, cybercrime as a means, and cyberspace as an enabler.