Cross-domain Cross-architecture Black-box Attacks on Fine-tuned Models with Transferred Evolutionary Strategies

• URL: http://arxiv.org/abs/2208.13182v1
• Date: Sun, 28 Aug 2022 09:23:56 GMT
• Title: Cross-domain Cross-architecture Black-box Attacks on Fine-tuned Models with Transferred Evolutionary Strategies
• Authors: Yinghua Zhang, Yangqiu Song, Kun Bai, Qiang Yang
• Abstract summary: Fine-tuning can be vulnerable to adversarial attacks. We propose two novel BAFT settings, cross-domain and cross-domain cross-architecture BAFT. We show that the proposed attack method can effectively and efficiently attack the fine-tuned models.
• Score: 41.49982803774183
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Fine-tuning can be vulnerable to adversarial attacks. Existing works about black-box attacks on fine-tuned models (BAFT) are limited by strong assumptions. To fill the gap, we propose two novel BAFT settings, cross-domain and cross-domain cross-architecture BAFT, which only assume that (1) the target model for attacking is a fine-tuned model, and (2) the source domain data is known and accessible. To successfully attack fine-tuned models under both settings, we propose to first train an adversarial generator against the source model, which adopts an encoder-decoder architecture and maps a clean input to an adversarial example. Then we search in the low-dimensional latent space produced by the encoder of the adversarial generator. The search is conducted under the guidance of the surrogate gradient obtained from the source model. Experimental results on different domains and different network architectures demonstrate that the proposed attack method can effectively and efficiently attack the fine-tuned models.

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