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• W4214812658 abstract "3D deep learning has been increasingly more popular for a variety of tasks including many safety-critical applications. However, recently several works raise the security issues of 3D deep models. Although most of them consider adversarial attacks, we identify that backdoor attack is indeed a more serious threat to 3D deep learning systems but remains unexplored. We present the backdoor attacks in 3D point cloud with a unified framework that exploits the unique properties of 3D data and networks. In particular, we design two attack approaches on point cloud: the poison-label backdoor attack (PointPBA) and the clean- label backdoor attack (PointCBA). The first one is straight-forward and effective in practice, while the latter is more sophisticated assuming there are certain data inspections. The attack algorithms are mainly motivated and developed by 1) the recent discovery of 3D adversarial samples suggesting the vulnerability of deep models under spatial transformation; 2) the proposed feature disentanglement technique that manipulates the feature of the data through optimization methods and its potential to embed a new task. Extensive experiments show the efficacy of the PointPBA with over 95% success rate across various 3D datasets and models, and the more stealthy PointCBA with around 50% success rate. Our proposed backdoor attack in 3D point cloud is expected to perform as a baseline for improving the robustness of 3D deep models." @default.
• W4214812658 created "2022-03-05" @default.
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• W4214812658 date "2021-10-01" @default.
• W4214812658 modified "2023-09-25" @default.
• W4214812658 title "PointBA: Towards Backdoor Attacks in 3D Point Cloud" @default.
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• W4214812658 doi "https://doi.org/10.1109/iccv48922.2021.01618" @default.
• W4214812658 hasPublicationYear "2021" @default.
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