This paper investigates possible contributions that an AI-based detector for deepfakes could make to the challenge of responding to new forms of cyberthreats, including fraud and disinformation as a threat to democracy. The paper investigates the implications of such a tool for the emerging European discourse on digital sovereignty in a global environment. While cybersecurity and disinformation are certainly not new topics, recent technological developments relating to AI-generated deepfakes have increased the manipulative potential of video and audio-based content spread online, making it a specific but important challenge in the global and interconnected information context.