Frontier AI is transforming cyber offence and defence faster than institutions can adapt. A closed roundtable uniting European CISOs, critical-infrastructure operators, federal authorities and frontier AI providers discusses the most urgent questions regarding defender-first AI deployment in practice. The roundtable’s results will feed Switzerland’s AI Action Plan and the Global AI Summit Geneva 2027. Invitation only. Chatham House Rule. Convened by digitalswitzerland and Swiss Cyber Institute.