
29.09.2026
In this article, Jonas Hemmelskamp, Nadja Douglas, and Simon Muschick examine how the OSCE can serve as a forum for cyber diplomacy and confidence-building despite geopolitical tensions.
As high-level European Union (EU) policy documents call for investment in active cyber defence capabilities, the legal and political powers for their use remain ill-defined. To demonstrate their commitment to principles of responsible state behaviour and due diligence, the EU and its member states have a duty to establish the normative foundations for the use of active cyber defence measures ahead of their deployment, while carefully managing the risk of a gradual militarisation of the cyber and information domain.



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