Smart, technologically managed city-regions are one of the main characteristics of the contemporary world. Since the attack to the Charlie Hebdo offices, city-regions and social media digital technologies have increasingly been changing the definition of 'territory of security' and 'security governance' . What are the characteristics of the security architecture created by the interaction of smart city-regions and digital technologies? Drawing from Actor-Network theory and Science and Technology Studies, we provide an empirical account of the shape of this new territory, by presenting a study of the controversy concerning security and social media in UK, the role of cities in this changed security space, and how social sciences can help better understand and respond to the opportunities and threats of smart cities. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. ReferencesAbrahamsen R, Leander A (eds) (2015) Routledge handbook of private security studies. Routledge, London Adamson FB (2016) Spaces of global security: beyond methodological nationalism. J Glob Secur Stud 1(1):19-35 Barry A (2001) Political machines: governing a technological society. Athlone, London Barry A (2013) The translation zone: between actor-network theory and international relations. Millenium J Int Stud 41(3):413-429 Baya-Laffite N (2017) Moving beyond the digitalised and natively digital divide? Mapping climate policy debates in multiple spaces. In: Paper presented at the 3rd international conference on public policy (ICPP3) June 28-30, 2017, Singapore