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An adversarial attack is an exploitative process in which minute alterations are made to natural inputs, causing the inputs to be misclassified by neural models. In the field of speech recognition, this has become an issue of increasing…

声音 · 计算机科学 2018-09-13 Krishan Rajaratnam , Kunal Shah , Jugal Kalita

Most adversarial attack methods that are designed to deceive a text classifier change the text classifier's prediction by modifying a few words or characters. Few try to attack classifiers by rewriting a whole sentence, due to the…

计算与语言 · 计算机科学 2022-10-21 Lei Xu , Ivan Ramirez , Kalyan Veeramachaneni

Despite the dramatic success in image generation, Generative Adversarial Networks (GANs) still face great challenges in synthesizing sequences of discrete elements, in particular human language. The difficulty in generator training arises…

计算与语言 · 计算机科学 2023-02-24 Yekun Chai , Qiyue Yin , Junge Zhang

Recent studies have shown that deep neural networks are vulnerable to intentionally crafted adversarial examples, and various methods have been proposed to defend against adversarial word-substitution attacks for neural NLP models. However,…

计算与语言 · 计算机科学 2021-10-07 Zongyi Li , Jianhan Xu , Jiehang Zeng , Linyang Li , Xiaoqing Zheng , Qi Zhang , Kai-Wei Chang , Cho-Jui Hsieh

Machine learning models are vulnerable to Adversarial Examples: minor perturbations to input samples intended to deliberately cause misclassification. Current defenses against adversarial examples, especially for Deep Neural Networks (DNN),…

密码学与安全 · 计算机科学 2019-01-04 Kathrin Grosse , David Pfaff , Michael Thomas Smith , Michael Backes

Various techniques are used in the generation of adversarial examples, including methods such as TextBugger which introduce minor, hardly visible perturbations to words leading to changes in model behaviour. Another class of techniques…

计算与语言 · 计算机科学 2025-05-14 Paweł Walkowiak , Marek Klonowski , Marcin Oleksy , Arkadiusz Janz

Vulnerability of various machine learning methods to adversarial examples has been recently explored in the literature. Power systems which use these vulnerable methods face a huge threat against adversarial examples. To this end, we first…

密码学与安全 · 计算机科学 2022-02-16 Jiwei Tian , Buhong Wang , Jing Li , Zhen Wang , Mete Ozay

Several years of research have shown that machine-learning systems are vulnerable to adversarial examples, both in theory and in practice. Until now, such attacks have primarily targeted visual models, exploiting the gap between human and…

计算与语言 · 计算机科学 2021-12-14 Nicholas Boucher , Ilia Shumailov , Ross Anderson , Nicolas Papernot

Recent studies show that pre-trained language models (LMs) are vulnerable to textual adversarial attacks. However, existing attack methods either suffer from low attack success rates or fail to search efficiently in the exponentially large…

计算与语言 · 计算机科学 2022-06-14 Boxin Wang , Chejian Xu , Xiangyu Liu , Yu Cheng , Bo Li

We propose a novel approach for generating unrestricted adversarial examples by manipulating fine-grained aspects of image generation. Unlike existing unrestricted attacks that typically hand-craft geometric transformations, we learn…

计算机视觉与模式识别 · 计算机科学 2020-10-23 Omid Poursaeed , Tianxing Jiang , Yordanos Goshu , Harry Yang , Serge Belongie , Ser-Nam Lim

Traditional adversarial attacks concentrate on manipulating clean examples in the pixel space by adding adversarial perturbations. By contrast, semantic adversarial attacks focus on changing semantic attributes of clean examples, such as…

计算机视觉与模式识别 · 计算机科学 2023-09-15 Chenan Wang , Jinhao Duan , Chaowei Xiao , Edward Kim , Matthew Stamm , Kaidi Xu

Although deep neural networks have achieved state-of-the-art performance in various machine learning tasks, adversarial examples, constructed by adding small non-random perturbations to correctly classified inputs, successfully fool highly…

计算与语言 · 计算机科学 2022-05-02 Na Liu , Mark Dras , Wei Emma Zhang

Recently, it has been shown that deep neural networks (DNN) are subject to attacks through adversarial samples. Adversarial samples are often crafted through adversarial perturbation, i.e., manipulating the original sample with minor…

机器学习 · 计算机科学 2018-05-18 Jingyi Wang , Jun Sun , Peixin Zhang , Xinyu Wang

Large Language Models (LLMs) are increasingly used in applications where the model selects from competing third-party content, such as in LLM-powered search engines or chatbot plugins. In this paper, we introduce Preference Manipulation…

密码学与安全 · 计算机科学 2024-07-03 Fredrik Nestaas , Edoardo Debenedetti , Florian Tramèr

Reinforcement learning (RL) has achieved remarkable success in fields like robotics and autonomous driving, but adversarial attacks designed to mislead RL systems remain challenging. Existing approaches often rely on modifying the…

机器学习 · 计算机科学 2025-07-25 Junyong Jiang , Buwei Tian , Chenxing Xu , Songze Li , Lu Dong

Neural machine translation systems tend to fail on less decent inputs despite its significant efficacy, which may significantly harm the credibility of this systems-fathoming how and when neural-based systems fail in such cases is critical…

计算与语言 · 计算机科学 2020-05-27 Wei Zou , Shujian Huang , Jun Xie , Xinyu Dai , Jiajun Chen

Recent research has proved that deep neural networks (DNNs) are vulnerable to adversarial examples, the legitimate input added with imperceptible and well-designed perturbations can fool DNNs easily in the testing stage. However, most of…

机器学习 · 计算机科学 2021-01-26 Yixiang Wang , Jiqiang Liu , Xiaolin Chang

Traditional (fickle) adversarial examples involve finding a small perturbation that does not change an input's true label but confuses the classifier into outputting a different prediction. Conversely, obstinate adversarial examples occur…

计算与语言 · 计算机科学 2022-11-01 Hannah Chen , Yangfeng Ji , David Evans

Pre-trained language models (PLMs) have been widely used to underpin various downstream tasks. However, the adversarial attack task has found that PLMs are vulnerable to small perturbations. Mainstream methods adopt a detached two-stage…

计算与语言 · 计算机科学 2023-05-30 Xuanjie Fang , Sijie Cheng , Yang Liu , Wei Wang

Today text classification models have been widely used. However, these classifiers are found to be easily fooled by adversarial examples. Fortunately, standard attacking methods generate adversarial texts in a pair-wise way, that is, an…

计算与语言 · 计算机科学 2020-03-24 Yankun Ren , Jianbin Lin , Siliang Tang , Jun Zhou , Shuang Yang , Yuan Qi , Xiang Ren