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Understanding and Defending Patched-based Adversarial Attacks for Vision Transformer

ICML 2023 · Adversarial robustness and security › Attacks on text and graphs · approach: Latency and driving-perception attacks

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add ARMRO layer-wise detect-and-mask defenseViT-B/16, ViT-B/32, ViT-L/32, DeiT-B/16 · 1-patch Token-Attack, Patch-Fool, GMYA on ImageNet 384x384robustness accuracy: e.g. ViT-B/16 Patch-Fool 1-patch 33.5% to 82.8%Helped
Add ARMRO defenseViT models · clean ImageNet accuracyclean accuracy: about 1% drop (ViT-B/16 85.0% to 84.1%)Hurt
Replace ARMRO with Attention-Mask (Nd=5) (ablation)ViT-B/32 · 1-patch Patch-Fool ImageNetrobustness accuracy: 66.4% vs 78.7% for ARMROHurt
Add ARMRO detection (Nd=5) vs Attention-Mask on false positives (ablation)ViT-B/32 · 1-patch Patch-Foolfalse positive ratio: Attention-Mask false positive >90% vs ARMRO ~7-10%Helped
Adaptive attack: reduce patch size or perturbation radius (weaker attacks) (ablation)ARMRO on ViT-B/32 · Patch-Fool adaptive attackdefense success rate: defense drops to 58% for 16-pixel or 0.4-radius attacks while attack success below 50%Mixed
Adaptive attack with strict column-score restriction (ablation)ARMRO on ViT-B/32 · Patch-Fool adaptive attackrobustness: robustness falls to 55% (only 55% of attacks detected)Hurt
Compare ARMRO to CNN-based patch defenses adapted to ViTViT-B/16 etc. · 1-patch Patch-Foolrobustness accuracy: ARMRO 83% vs Patch Guard 64% and Saliency Map 55% on ViT-B/16Helped

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