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arXiv 2302.09578cs.CRcs.AI
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关于分割学习中服务器端后门攻击可行性的研究

On Feasibility of Server-side Backdoor Attacks on Split Learning

Radboud University(拉德堡德大学)

Behrad Tajalli, Oguzhan Ersoy, Stjepan Picek

AI总结:

本文首次研究分割学习中的服务器端后门攻击,提出代理客户端和自编码器两种注入方法,通过761次实验证明分割学习对此类投毒攻击具有高度鲁棒性。

摘要:

分割学习是一种协作学习设计,允许多个参与者(客户端)在保持其数据集私密的同时训练共享模型。近期研究表明,协作学习模型,特别是联邦学习,容易受到安全和隐私攻击,例如模型推断攻击和后门攻击。后门攻击是一类投毒攻击,攻击者通过操纵模型的训练过程来试图控制模型输出。尽管已有关于分割学习推断攻击的研究,但尚未针对后门攻击进行测试。本文对分割学习实施了一种新颖的后门攻击,并研究其有效性。与传统的在客户端进行的后门攻击不同,我们从服务器端注入后门触发器。为此,我们提供了两种攻击方法:一种使用代理客户端,另一种使用自编码器,通过传入的粉碎数据及其发往无辜参与者的传出梯度来毒化模型。我们使用三种模型架构和三个公开可用的图像领域数据集进行了实验,共运行了761次实验来评估我们的攻击方法。结果表明,尽管使用了强模式和注入方法,分割学习对此类投毒攻击具有高度的鲁棒性和抵抗力。虽然我们在MNIST数据集上取得了100%的攻击成功率作为最佳结果,但在大多数其他情况下,当增加切割层时,我们的攻击几乎不起作用。

英文摘要:

Split learning is a collaborative learning design that allows several participants (clients) to train a shared model while keeping their datasets private. Recent studies demonstrate that collaborative learning models, specifically federated learning, are vulnerable to security and privacy attacks such as model inference and backdoor attacks. Backdoor attacks are a group of poisoning attacks in which the attacker tries to control the model output by manipulating the model's training process. While there have been studies regarding inference attacks on split learning, it has not yet been tested for backdoor attacks. This paper performs a novel backdoor attack on split learning and studies its effectiveness. Despite traditional backdoor attacks done on the client side, we inject the backdoor trigger from the server side. For this purpose, we provide two attack methods: one using a surrogate client and another using an autoencoder to poison the model via incoming smashed data and its outgoing gradient toward the innocent participants. We did our experiments using three model architectures and three publicly available datasets in the image domain and ran a total of 761 experiments to evaluate our attack methods. The results show that despite using strong patterns and injection methods, split learning is highly robust and resistant to such poisoning attacks. While we get the attack success rate of 100% as our best result for the MNIST dataset, in most of the other cases, our attack shows little success when increasing the cut layer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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