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Reality Crisis and Securitisation: The Security Dimension of Disinformation
Abstract
This chapter examines how the post-truth condition transforms the meaning of reality and reshapes contemporary security practices through the spread of disinformation, misinformation, and truth decay. It argues that security threats are no longer defined solely by material capabilities or physical violence, but increasingly by perceptions constructed through narratives, emotions, and digitally mediated information environments. Drawing on epistemological, cognitive, and securitisation theories, the chapter demonstrates how distorted information weakens shared understandings of reality, amplifies social polarisation, and facilitates the legitimisation of extraordinary security measures. Particular attention is given to the role of digital ecosystems—especially social media, the deep web, and the dark web—in accelerating uncertainty, anonymity, and fear. Ultimately, it conceptualises disinformation not as a secondary communication problem, but as a structural security challenge that drives the securitisation of public discourse and the digital sphere in the post-truth era
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