Aalborg University's AI:SECURITY Lab is recruiting a PhD fellow to join a dynamic research team focused on advanced trustworthy AI and its application to cybersecurity. The position is based in Copenhagen and is part of the AI:X initiative, which aims to advance AI research and foster interdisciplinary collaboration. The successful candidate will work on developing methods to ensure the privacy, security, and robustness of AI systems, with research topics including adversarial attacks and defenses, privacy-preserving AI (such as federated learning and differential privacy), cryptographic approaches for data privacy, and deepfake detection. The lab is a collaboration between the Department of Electronic Systems and the Department of Computer Science at Aalborg University, and is expected to grow significantly in the coming year. Applicants should have a strong background in information engineering, computer science, cybersecurity, or related fields, and possess strong programming skills. The position is fully funded for three years, with salary and benefits according to Danish standards. The application deadline is November 10, 2025. To apply, candidates must submit a motivation letter, CV, diplomas, a project description, and other relevant documents via the university's recruitment system. For more information, candidates can contact Assistant Professor Qiongxiu Li or Professor Johannes Bjerva. The lab offers a vibrant, international research environment and opportunities to contribute to high-impact research in AI security and privacy.