"This paper delves into the paramount significance of social media in contemporary warfare, shedding light on the critical need for effective measures to counter online radical narratives and prevent the spread of violent extremism. It explores how autocratic and repressive groups like the Taliban exploit social media platforms to their advantage and how these platforms have become a fertile ground for violent extremist groups to establish a novel front in warfare by allowing them to directly engage with civilians and the public, thus effectively closing civic space. This direct engagement enables violent extremist organisations to disseminate their ideologies and propaganda, radicalise, brainwash, manipulate, recruit, mobilise support, and communicate with the international community and the world. The research design incorporated a comprehensive analysis, combining first-hand experiences of locals, documentation, and reporting of content on Facebook, with an examination of the Taliban's social media posts, tweets, and engagement on platforms like Twitter and Facebook. The primary data was further complemented with relevant secondary data and reports. The findings highlight the Taliban's effective weaponisation of violent content on social media, strategically employed to shape public opinion and behaviours, demoralise the military, and discourage resistance against them. This role in facilitating their military takeover of the country and later in establishing and advocating for the legitimacy of their autocratic rule. This paper argues for heightened vigilance and proactive measures to counter misinformation, glorification of violence, and radicalisation online, ultimately safeguarding the integrity of information dissemination and societal well-being." (Abstract)