Stochastic Variance Reduced Ensemble Adversarial Attack for Boosting the Adversarial Transferability

• URL: http://arxiv.org/abs/2111.10752v1
• Date: Sun, 21 Nov 2021 06:33:27 GMT
• Title: Stochastic Variance Reduced Ensemble Adversarial Attack for Boosting the Adversarial Transferability
• Authors: Yifeng Xiong, Jiadong Lin, Min Zhang, John E. Hopcroft, Kun He
• Abstract summary: Black-box adversarial attacks can be transferred from one model to another. In this work, we propose a novel ensemble attack method called the variance reduced ensemble attack. Empirical results on the standard ImageNet demonstrate that the proposed method could boost the adversarial transferability and outperforms existing ensemble attacks significantly.
• Score: 20.255708227671573
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The black-box adversarial attack has attracted impressive attention for its practical use in the field of deep learning security, meanwhile, it is very challenging as there is no access to the network architecture or internal weights of the target model. Based on the hypothesis that if an example remains adversarial for multiple models, then it is more likely to transfer the attack capability to other models, the ensemble-based adversarial attack methods are efficient and widely used for black-box attacks. However, ways of ensemble attack are rather less investigated, and existing ensemble attacks simply fuse the outputs of all the models evenly. In this work, we treat the iterative ensemble attack as a stochastic gradient descent optimization process, in which the variance of the gradients on different models may lead to poor local optima. To this end, we propose a novel attack method called the stochastic variance reduced ensemble (SVRE) attack, which could reduce the gradient variance of the ensemble models and take full advantage of the ensemble attack. Empirical results on the standard ImageNet dataset demonstrate that the proposed method could boost the adversarial transferability and outperforms existing ensemble attacks significantly.

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