Papers › Transferable Adversarial Examples with Bayes Approach

Transferable Adversarial Examples with Bayes Approach

13 Aug 2022arXiv:2208.06538archive 2025-07-28

Mingyuan Fan, Cen Chen, Wenmeng Zhou, Yinggui Wang

The vulnerability of deep neural networks (DNNs) to black-box adversarial attacks is one of the most heated topics in trustworthy AI. In such attacks, the attackers operate without any insider knowledge of the model, making the cross-model transferability of adversarial examples critical. Despite the potential for adversarial examples to be effective across various models, it has been observed that adversarial examples that are specifically crafted for a specific model often exhibit poor transferability. In this paper, we explore the transferability of adversarial examples via the lens of Bayesian approach. Specifically, we leverage Bayesian approach to probe the transferability and then study what constitutes a transferability-promoting prior. Following this, we design two concrete transferability-promoting priors, along with an adaptive dynamic weighting strategy for instances sampled from these priors. Employing these techniques, we present BayAtk. Extensive experiments illustrate the significant effectiveness of BayAtk in crafting more transferable adversarial examples against both undefended and defended black-box models compared to existing state-of-the-art attacks.

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