Chelsey Slack is Deputy Head of the Cyber and Hybrid Policy Section with the International Staff at NATO Headquarters in Brussels. In this role, she provides advice and supports the development and implementation of NATO’s policies, particularly in the field of cyber defence. She is actively engaged in NATO’s cooperation with partners and international organisations in this area.

Previously, she worked at the Canadian Foreign Ministry as part of a Stabilisation and Reconstruction Task Force specialising in conflict prevention. Chelsey earned a Master’s Degree of Philosophy in International Relations from the University of Cambridge. She studied as a Hansard Scholar at the London School of Economics, at the Institut d’Études Politiques de Lyon in France, and at the University of Ottawa in Canada.