DTA: Distribution Transform-based Attack for Query-Limited Scenario

• URL: http://arxiv.org/abs/2312.07245v1
• Date: Tue, 12 Dec 2023 13:21:03 GMT
• Title: DTA: Distribution Transform-based Attack for Query-Limited Scenario
• Authors: Renyang Liu, Wei Zhou, Xin Jin, Song Gao, Yuanyu Wang, Ruxin Wang
• Abstract summary: In generating adversarial examples, the conventional black-box attack methods rely on sufficient feedback from the to-be-attacked models. This paper proposes a hard-label attack that simulates an attacked action being permitted to conduct a limited number of queries. Experiments validate the effectiveness of the proposed idea and the superiority of DTA over the state-of-the-art.
• Score: 11.874670564015789
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In generating adversarial examples, the conventional black-box attack methods rely on sufficient feedback from the to-be-attacked models by repeatedly querying until the attack is successful, which usually results in thousands of trials during an attack. This may be unacceptable in real applications since Machine Learning as a Service Platform (MLaaS) usually only returns the final result (i.e., hard-label) to the client and a system equipped with certain defense mechanisms could easily detect malicious queries. By contrast, a feasible way is a hard-label attack that simulates an attacked action being permitted to conduct a limited number of queries. To implement this idea, in this paper, we bypass the dependency on the to-be-attacked model and benefit from the characteristics of the distributions of adversarial examples to reformulate the attack problem in a distribution transform manner and propose a distribution transform-based attack (DTA). DTA builds a statistical mapping from the benign example to its adversarial counterparts by tackling the conditional likelihood under the hard-label black-box settings. In this way, it is no longer necessary to query the target model frequently. A well-trained DTA model can directly and efficiently generate a batch of adversarial examples for a certain input, which can be used to attack un-seen models based on the assumed transferability. Furthermore, we surprisingly find that the well-trained DTA model is not sensitive to the semantic spaces of the training dataset, meaning that the model yields acceptable attack performance on other datasets. Extensive experiments validate the effectiveness of the proposed idea and the superiority of DTA over the state-of-the-art.

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