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@INPROCEEDINGS{OtroshiShahreza_NEURIPS_2024,
         author = {Otroshi Shahreza, Hatef and Marcel, S{\'{e}}bastien},
       keywords = {Face Recognition, Identity, information leakage, Membership Inference (MI) Attack, Memorisation, Synthetic Data},
       projects = {TRESPASS-ETN, SAFER},
          title = {Unveiling Synthetic Faces: How Synthetic Datasets Can Expose Real Identities},
      booktitle = {NeurIPS Workshop on New Frontiers in Adversarial Machine Learning},
           year = {2024},
           note = {Project page: https://www.idiap.ch/paper/unveiling_synthetic_faces/},
       abstract = {Synthetic data generation is gaining increasing popularity in different computer vision applications. Existing state-of-the-art face recognition models are trained using large-scale face datasets, which are crawled from the Internet and raise privacy and ethical concerns. To address such concerns, several works have proposed generating synthetic face datasets to train face recognition models. However, these methods depend on generative models, which are trained on real face images. In this work, we design a simple yet effective membership inference attack to systematically study if any of the existing synthetic face recognition datasets leak any information from the real data used to train the generator model. We provide an extensive study on 6 state-of-the-art synthetic face recognition datasets, and show that in all these synthetic datasets, several samples from the original real dataset are leaked. To our knowledge, this paper is the first work which shows the leakage from training data of generator models into the generated synthetic face recognition datasets. Our study demonstrates privacy pitfalls in synthetic face recognition datasets and paves the way for future studies on generating responsible synthetic face datasets. Project page: https://www.idiap.ch/paper/unveiling_synthetic_faces/},
            pdf = {https://publications.idiap.ch/attachments/papers/2024/OtroshiShahreza_NEURIPS_2024.pdf}
}