This essay maps the transformation of security from a symbol of authoritarian government under the Cold War paradigm of National Security into a public good and a policy field acknowledged as legitimate and democratic by politicians and policy experts. Using present-day Argentina as an example, we show how security ideas gain dominance across the political spectrum, displacing and subordinating democratic politics conceived in terms of rights. As institutions increasingly accept security measures and pre-emptive risk management, a securitising discourse – despite its claims to advocate for the ‘citizen’ – trumps governance and the rule of law. Appealing to citizens’ concerns and rights, the new forms of securitisation may yet undermine democratic life.