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Exploiting Adversarial Training models to compromise FL's privacy

This repository contains the code necessary to replicate the results of our paper:

Privacy Leakage of Adversarial Training Models in Federated Learning Systems

CVPR'22 Workshop: The Art of Robustness

Jingyang Zhang, Yiran Chen, Hai Li @ Duke CEI Lab

Check out the paper here!!!

Overview

Adversarial Training (AT) is crucial for obtaining deep neural networks that are robust to adversarial attacks, yet recent works found that it could also make models more vulnerable to privacy attacks. In this work, we further reveal this unsettling property of AT by designing a novel privacy attack that is practically applicable to the privacy-sensitive Federated Learning (FL) systems. Using our method, the attacker can exploit AT models in the FL system to accurately reconstruct users’ private training images even when the training batch size is large, despite that previously large batch training was thought to be able to protect the privacy. In other words, we demonstrate that any FL clients that perform AT are putting their privacy at risk. The above figure is an overview of our attack. See our paper for details!

This figure visualizes the reconstructed images using Adversarial Training models (first row in each pair) and the ground-truth ones. The attacker can pretty accurately recover the training images of FL clients and thus compromise their privacy.

Get started

Environment

Follow the commands below to set up the environment.

  1. Clone the repo: git clone https://github.com/zjysteven/PrivayAttack_AT_FL.git

  2. Create a conda environment

conda create -n AT-privacy python=3.8
conda activate AT-privacy
python -m pip install -r requirements.txt

Dataset

We use ImageNet as the dataset. To run our experiments, make sure that you download the ImageNet and have train/, val/ subfolder inside the root directory.

Models

We use pre-trained models from robust-transfer repo. download_pretrained_models.sh is a sample download script.

Reproducing experiments

All experiments can be reproduced by running main.py. We provide a sample script main.sh. Remember to change the directory of ImageNet to your own version.

Reference

If you find our work/code helpful, please consider citing our work.

@InProceedings{Zhang_2022_CVPR,
    author    = {Zhang, Jingyang and Chen, Yiran and Li, Hai},
    title     = {Privacy Leakage of Adversarial Training Models in Federated Learning Systems},
    booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) Workshops},
    month     = {June},
    year      = {2022},
    pages     = {108-114}
}