2023

Membership Inference Attacks against Diffusion Models

Matsumoto, Tomoya, Miura, Takayuki, Yanai, Naoto

Understand

Diffusion models have attracted attention in recent years as innovative generative models.

  • In this paper, we investigate whether a diffusion model is resistant to a membership inference attack, which evaluates the privacy leakage of a machine learning model.
  • We primarily discuss the diffusion model from the standpoints of comparison with a generative adversarial network (GAN) as conventional models and hyperparameters unique to the diffusion model, i.e., time steps, sampling steps, and sampling variances.
  • We conduct extensive experiments with DDIM as a diffusion model and DCGAN as a GAN on the CelebA and CIFAR-10 datasets in both white-box and black-box settings and then confirm if the diffusion model is comparably resistant to a membership inference attack as GAN.

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