Towards the Transferable Audio Adversarial Attack via Ensemble Methods

• URL: http://arxiv.org/abs/2304.08811v1
• Date: Tue, 18 Apr 2023 08:21:49 GMT
• Title: Towards the Transferable Audio Adversarial Attack via Ensemble Methods
• Authors: Feng Guo, Zheng Sun, Yuxuan Chen and Lei Ju
• Abstract summary: We explore the potential factors that impact adversarial examples (AEs) transferability in deep learning-based speech recognition. Our results show a remarkable difference in the transferability of AEs between speech and images, with the data relevance being low in images but opposite in speech recognition. Motivated by dropout-based ensemble approaches, we propose random gradient ensembles and dynamic gradient-weighted ensembles, and we evaluate the impact of ensembles on the transferability of AEs.
• Score: 5.262820533171069
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In recent years, deep learning (DL) models have achieved significant progress in many domains, such as autonomous driving, facial recognition, and speech recognition. However, the vulnerability of deep learning models to adversarial attacks has raised serious concerns in the community because of their insufficient robustness and generalization. Also, transferable attacks have become a prominent method for black-box attacks. In this work, we explore the potential factors that impact adversarial examples (AEs) transferability in DL-based speech recognition. We also discuss the vulnerability of different DL systems and the irregular nature of decision boundaries. Our results show a remarkable difference in the transferability of AEs between speech and images, with the data relevance being low in images but opposite in speech recognition. Motivated by dropout-based ensemble approaches, we propose random gradient ensembles and dynamic gradient-weighted ensembles, and we evaluate the impact of ensembles on the transferability of AEs. The results show that the AEs created by both approaches are valid for transfer to the black box API.

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