Patch-wise++ Perturbation for Adversarial Targeted Attacks

• URL: http://arxiv.org/abs/2012.15503v2
• Date: Thu, 7 Jan 2021 07:34:21 GMT
• Title: Patch-wise++ Perturbation for Adversarial Targeted Attacks
• Authors: Lianli Gao, Qilong Zhang, Jingkuan Song and Heng Tao Shen
• Abstract summary: We propose a patch-wise iterative method (PIM) aimed at crafting adversarial examples with high transferability. Specifically, we introduce an amplification factor to the step size in each iteration, and one pixel's overall gradient overflowing the $epsilon$-constraint is properly assigned to its surrounding regions. Compared with the current state-of-the-art attack methods, we significantly improve the success rate by 35.9% for defense models and 32.7% for normally trained models.
• Score: 132.58673733817838
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Although great progress has been made on adversarial attacks for deep neural networks (DNNs), their transferability is still unsatisfactory, especially for targeted attacks. There are two problems behind that have been long overlooked: 1) the conventional setting of $T$ iterations with the step size of $\epsilon/T$ to comply with the $\epsilon$-constraint. In this case, most of the pixels are allowed to add very small noise, much less than $\epsilon$; and 2) usually manipulating pixel-wise noise. However, features of a pixel extracted by DNNs are influenced by its surrounding regions, and different DNNs generally focus on different discriminative regions in recognition. To tackle these issues, we propose a patch-wise iterative method (PIM) aimed at crafting adversarial examples with high transferability. Specifically, we introduce an amplification factor to the step size in each iteration, and one pixel's overall gradient overflowing the $\epsilon$-constraint is properly assigned to its surrounding regions by a project kernel. But targeted attacks aim to push the adversarial examples into the territory of a specific class, and the amplification factor may lead to underfitting. Thus, we introduce the temperature and propose a patch-wise++ iterative method (PIM++) to further improve transferability without significantly sacrificing the performance of the white-box attack. Our method can be generally integrated to any gradient-based attack method. Compared with the current state-of-the-art attack methods, we significantly improve the success rate by 35.9\% for defense models and 32.7\% for normally trained models on average.

Related papers

• Sparse and Imperceptible Adversarial Attack via a Homotopy Algorithm [93.80082636284922]
  Sparse adversarial attacks can fool deep networks (DNNs) by only perturbing a few pixels. Recent efforts combine it with another l_infty perturbation on magnitudes. We propose a homotopy algorithm to tackle the sparsity and neural perturbation framework.
  arXiv  Detail & Related papers  (2021-06-10T20:11:36Z)
• Transferable Sparse Adversarial Attack [62.134905824604104]
  We introduce a generator architecture to alleviate the overfitting issue and thus efficiently craft transferable sparse adversarial examples. Our method achieves superior inference speed, 700$times$ faster than other optimization-based methods.
  arXiv  Detail & Related papers  (2021-05-31T06:44:58Z)
• Local Aggressive Adversarial Attacks on 3D Point Cloud [12.121901103987712]
  Deep neural networks are prone to adversarial examples which could deliberately fool the model to make mistakes. In this paper, we propose a local aggressive adversarial attacks (L3A) to solve above issues. Experiments on PointNet, PointNet++ and DGCNN demonstrate the state-of-the-art performance of our method.
  arXiv  Detail & Related papers  (2021-05-19T12:22:56Z)
• Targeted Attack against Deep Neural Networks via Flipping Limited Weight Bits [55.740716446995805]
  We study a novel attack paradigm, which modifies model parameters in the deployment stage for malicious purposes. Our goal is to misclassify a specific sample into a target class without any sample modification. By utilizing the latest technique in integer programming, we equivalently reformulate this BIP problem as a continuous optimization problem.
  arXiv  Detail & Related papers  (2021-02-21T03:13:27Z)
• GreedyFool: Distortion-Aware Sparse Adversarial Attack [138.55076781355206]
  Modern deep neural networks (DNNs) are vulnerable to adversarial samples. Sparse adversarial samples can fool the target model by only perturbing a few pixels. We propose a novel two-stage distortion-aware greedy-based method dubbed as "GreedyFool"
  arXiv  Detail & Related papers  (2020-10-26T17:59:07Z)
• Patch-wise Attack for Fooling Deep Neural Network [153.59832333877543]
  We propose a patch-wise iterative algorithm -- a black-box attack towards mainstream normally trained and defense models. We significantly improve the success rate by 9.2% for defense models and 3.7% for normally trained models on average.
  arXiv  Detail & Related papers  (2020-07-14T01:50:22Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.