通过特征重排提升跨架构对抗样本迁移能力,无需计算开销。
Enabling Heterogeneous Adversarial Transferability via Feature Permutation Attacks
- 用特征重排模拟长程依赖,让不同架构模型更易产生可迁移的对抗样本。
- 在14种架构上测试,对CNN、ViT、MLP攻击成功率最高提升14.57%。
- 零参数零算力,可无缝集成到现有攻击方法中,适合实战部署。
黑盒场景下的对抗攻击极具实用性,基于迁移的攻击是生成能从代理模型迁移到未见目标模型的对抗样本最有效的方法。然而,当在异构架构(如CNN、MLP和视觉变换器ViTs)间迁移时,其性能显著下降,源于架构本质差异。为此,我们提出零FLOP、无参数的特征重排攻击(FPA),通过新颖的特征重排(FP)操作,重新排列选定特征图中的像素值,以模拟长程依赖,使CNN更接近ViTs和MLPs的行为。该方法增强特征多样性,显著提升跨异构架构及同构CNN间的迁移性。在14种先进架构上的广泛评估表明,FPA在CNN、ViT和MLP上分别实现最高7.68%、14.57%和14.48%的攻击成功率绝对提升,优于现有黑盒攻击。此外,FPA具有高度泛化性,可无缝集成至其他迁移攻击中进一步提升性能。研究结果确立了FPA作为一项高效、轻量且鲁棒的跨异构架构对抗迁移增强策略。
原文摘要 · Abstract (English)
Adversarial attacks in black-box settings are highly practical, with transfer-based attacks being the most effective at generating adversarial examples (AEs) that transfer from surrogate models to unseen target models. However, their performance significantly degrades when transferring across heterogeneous architectures -- such as CNNs, MLPs, and Vision Transformers (ViTs) -- due to fundamental architectural differences. To address this, we propose Feature Permutation Attack (FPA), a zero-FLOP, parameter-free method that enhances adversarial transferability across diverse architectures. FPA introduces a novel feature permutation (FP) operation, which rearranges pixel values in selected feature maps to simulate long-range dependencies, effectively making CNNs behave more like ViTs and MLPs. This enhances feature diversity and improves transferability both across heterogeneous architectures and within homogeneous CNNs. Extensive evaluations on 14 state-of-the-art architectures show that FPA achieves maximum absolute gains in attack success rates of 7.68% on CNNs, 14.57% on ViTs, and 14.48% on MLPs, outperforming existing black-box attacks. Additionally, FPA is highly generalizable and can seamlessly integrate with other transfer-based attacks to further boost their performance. Our findings establish FPA as a robust, efficient, and computationally lightweight strategy for enhancing adversarial transferability across heterogeneous architectures.
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