Tessa has completed a BA in Cultural Anthropology at Utrecht University, including minors in International Relations and Conflict Studies and extra courses at the University of Sydney. Currently, she is completing a MSc in Crisis and Security Management: Governance of Radicalism, Extremism, and Terrorism at Leiden University. Her interest is in the interactions between security, society, and politics. Moreover, she is focused on the interplay between exclusion and (online) inclusion of people. This interest extends to the way in which this interplay plays a role in polarisation within societies. Apart from having a keen interest in polarisation within societies, she is also focused on the relevance of this interplay of exclusion and inclusion in understanding and countering or preventing radicalization and extremism. Born and raised in the Netherlands, Tessa speaks Dutch and English. In addition, she is currently learning French.