Generative artificial intelligence (gen AI) introduces novel opportunities to strengthencentral banks’ cyber security but also presents new risks. We use data from a uniquesurvey among cyber security experts at major central banks to shed light on theseissues. Responses reveal that most central banks have already adopted or plan toadopt gen AI tools in the context of cyber security, as perceived benefits outweighrisks. Experts foresee that AI tools will improve cyber threat detection and