A Simple DropConnect Approach to Transfer-based Targeted Attack

• URL: http://arxiv.org/abs/2504.18594v1
• Date: Thu, 24 Apr 2025 12:29:23 GMT
• Title: A Simple DropConnect Approach to Transfer-based Targeted Attack
• Authors: Tongrui Su, Qingbin Li, Shengyu Zhu, Wei Chen, Xueqi Cheng,
• Abstract summary: We study the problem of transfer-based black-box attack, where adversarial samples generated using a single surrogate model are directly applied to target models.<n>We propose to Mitigate perturbation Co-adaptation by DropConnect to enhance transferability.<n>In the challenging scenario of transferring from a CNN-based model to Transformer-based models, MCD achieves 13% higher average ASRs compared with state-of-the-art baselines.
• Score: 43.039945949426546
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study the problem of transfer-based black-box attack, where adversarial samples generated using a single surrogate model are directly applied to target models. Compared with untargeted attacks, existing methods still have lower Attack Success Rates (ASRs) in the targeted setting, i.e., the obtained adversarial examples often overfit the surrogate model but fail to mislead other models. In this paper, we hypothesize that the pixels or features in these adversarial examples collaborate in a highly dependent manner to maximize the success of an adversarial attack on the surrogate model, which we refer to as perturbation co-adaptation. Then, we propose to Mitigate perturbation Co-adaptation by DropConnect (MCD) to enhance transferability, by creating diverse variants of surrogate model at each optimization iteration. We conduct extensive experiments across various CNN- and Transformer-based models to demonstrate the effectiveness of MCD. In the challenging scenario of transferring from a CNN-based model to Transformer-based models, MCD achieves 13% higher average ASRs compared with state-of-the-art baselines. MCD boosts the performance of self-ensemble methods by bringing in more diversification across the variants while reserving sufficient semantic information for each variant. In addition, MCD attains the highest performance gain when scaling the compute of crafting adversarial examples.

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