This study examines digital radicalism as a form of non-traditional security threat in Indonesia during the 2020–2025 period and the counterterrorism strategies implemented by the government to address it. The development of information technology and social media has transformed the dissemination of radical ideologies into a digital phenomenon characterized by faster, broader, and increasingly difficult-to-control information flows. Radical groups exploit various digital platforms, including social media, instant messaging applications, and content-sharing services, to spread propaganda, establish networks, and conduct online recruitment, potentially threatening social stability, information security, and societal resilience. This study employs a qualitative research method with a descriptive approach, supported by the concept of non-traditional security and theories of radicalism. The findings indicate a significant increase in radical content across various digital platforms. In response, Indonesia has implemented counterterrorism strategies through law enforcement, counter-narratives, counter-propaganda, deradicalization programs, and collaboration among the National Counterterrorism Agency (BNPT), the Ministry of Communication and Digital Affairs (Komdigi), digital platforms, and civil society.
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