A GAN-Based Data Poisoning Attack Against Federated Learning Systems and Its Countermeasure

• URL: http://arxiv.org/abs/2405.11440v2
• Date: Tue, 21 May 2024 12:52:38 GMT
• Title: A GAN-Based Data Poisoning Attack Against Federated Learning Systems and Its Countermeasure
• Authors: Wei Sun, Bo Gao, Ke Xiong, Yuwei Wang,
• Abstract summary: This paper presents a new data poisoning attack model named VagueGAN. VagueGAN can generate seemingly legitimate but noisy poisoned data by taking advantage of generative adversarial network (GAN) variants. Our attack method is generally much more stealthy as well as more effective in degrading FL performance with low complexity.
• Score: 17.975736855580674
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: As a distributed machine learning paradigm, federated learning (FL) is collaboratively carried out on privately owned datasets but without direct data access. Although the original intention is to allay data privacy concerns, "available but not visible" data in FL potentially brings new security threats, particularly poisoning attacks that target such "not visible" local data. Initial attempts have been made to conduct data poisoning attacks against FL systems, but cannot be fully successful due to their high chance of causing statistical anomalies. To unleash the potential for truly "invisible" attacks and build a more deterrent threat model, in this paper, a new data poisoning attack model named VagueGAN is proposed, which can generate seemingly legitimate but noisy poisoned data by untraditionally taking advantage of generative adversarial network (GAN) variants. Capable of manipulating the quality of poisoned data on demand, VagueGAN enables to trade-off attack effectiveness and stealthiness. Furthermore, a cost-effective countermeasure named Model Consistency-Based Defense (MCD) is proposed to identify GAN-poisoned data or models after finding out the consistency of GAN outputs. Extensive experiments on multiple datasets indicate that our attack method is generally much more stealthy as well as more effective in degrading FL performance with low complexity. Our defense method is also shown to be more competent in identifying GAN-poisoned data or models. The source codes are publicly available at \href{https://github.com/SSssWEIssSS/VagueGAN-Data-Poisoning-Attack-and-Its-Countermeasure}{https://github.com/SSssWEIssSS/VagueGAN-Data-Poisoning-Attack-and-Its-Countermeasure}.

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