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Adversarial attacks on machine learning algorithms have been a key deterrent to the adoption of AI in many real-world use cases. They significantly undermine the ability of high-performance neural networks by forcing misclassifications.…

Machine Learning · Computer Science 2024-04-04 Nandish Chattopadhyay , Atreya Goswami , Anupam Chattopadhyay

Automatic speech recognition (ASR) systems are known to be vulnerable to adversarial attacks. This paper addresses detection and defence against targeted white-box attacks on speech signals for ASR systems. While existing work has utilised…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-13 Nikolai L. Kühne , Astrid H. F. Kitchen , Marie S. Jensen , Mikkel S. L. Brøndt , Martin Gonzalez , Christophe Biscio , Zheng-Hua Tan

Deep neural network approaches have demonstrated high performance in object recognition (CNN) and detection (Faster-RCNN) tasks, but experiments have shown that such architectures are vulnerable to adversarial attacks (FFF, UAP): low…

Computer Vision and Pattern Recognition · Computer Science 2020-11-16 Faisal Alamri , Sinan Kalkan , Nicolas Pugeault

Adversarial example detection plays a vital role in adaptive cyber defense, especially in the face of rapidly evolving attacks. In adaptive cyber defense, the nature and characteristics of attacks continuously change, making it crucial to…

Cryptography and Security · Computer Science 2023-08-31 Atefeh Mahdavi , Neda Keivandarian , Marco Carvalho

In this paper, we present an effective method to craft text adversarial samples, revealing one important yet underestimated fact that DNN-based text classifiers are also prone to adversarial sample attack. Specifically, confronted with…

Cryptography and Security · Computer Science 2019-01-08 Bin Liang , Hongcheng Li , Miaoqiang Su , Pan Bian , Xirong Li , Wenchang Shi

End-to-end (E2E) automatic speech recognition (ASR) methods exhibit remarkable performance. However, since the performance of such methods is intrinsically linked to the context present in the training data, E2E-ASR methods do not perform…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-22 Yui Sudo , Muhammad Shakeel , Yosuke Fukumoto , Yifan Peng , Shinji Watanabe

Sentence-level attacks craft adversarial sentences that are synonymous with correctly-classified sentences but are misclassified by the text classifiers. Under the black-box setting, classifiers are only accessible through their feedback to…

Computation and Language · Computer Science 2024-02-22 Raha Moraffah , Huan Liu

Despite the remarkable performance and generalization levels of deep learning models in a wide range of artificial intelligence tasks, it has been demonstrated that these models can be easily fooled by the addition of imperceptible yet…

Machine Learning · Computer Science 2023-01-27 Jon Vadillo , Roberto Santana , Jose A. Lozano

Deep neural networks have demonstrated remarkable effectiveness across a wide range of tasks such as semantic segmentation. Nevertheless, these networks are vulnerable to adversarial attacks that add imperceptible perturbations to the input…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Kira Maag , Roman Resner , Asja Fischer

This paper concerns corpus poisoning attacks in dense information retrieval, where an adversary attempts to compromise the ranking performance of a search algorithm by injecting a small number of maliciously generated documents into the…

Information Retrieval · Computer Science 2026-03-17 Yongkang Li , Panagiotis Eustratiadis , Simon Lupart , Evangelos Kanoulas

Training robust deep learning models for down-stream tasks is a critical challenge. Research has shown that down-stream models can be easily fooled with adversarial inputs that look like the training data, but slightly perturbed, in a way…

Machine Learning · Computer Science 2021-01-19 Mahmoud Hossam , Trung Le , He Zhao , Dinh Phung

Automated red-teaming for LLMs often discovers narrow attack slices, missing diverse real-world threats, and yielding insufficient data for safety fine-tuning. We introduce Persona-Conditioned Adversarial Prompting (PCAP), which conditions…

Machine Learning · Computer Science 2026-05-13 Cristian Morasso , Anisa Halimi , Muhammad Zaid Hameed , Douglas Leith

We propose a novel genetic-algorithm technique that generates black-box adversarial examples which successfully fool neural network based text classifiers. We perform a genetic search with multi-objective optimization guided by deep…

Artificial Intelligence · Computer Science 2020-11-11 Alex Mathai , Shreya Khare , Srikanth Tamilselvam , Senthil Mani

We propose a probabilistic perspective on adversarial examples, allowing us to embed subjective understanding of semantics as a distribution into the process of generating adversarial examples, in a principled manner. Despite significant…

Machine Learning · Statistics 2024-11-26 Andi Zhang , Mingtian Zhang , Damon Wischik

Representation learning of textual networks poses a significant challenge as it involves capturing amalgamated information from two modalities: (i) underlying network structure, and (ii) node textual attributes. For this, most existing…

Computation and Language · Computer Science 2020-11-06 Tony Gracious , Ambedkar Dukkipati

There has been a recent surge in research on adversarial perturbations that defeat Deep Neural Networks (DNNs) in machine vision; most of these perturbation-based attacks target object classifiers. Inspired by the observation that humans…

Computer Vision and Pattern Recognition · Computer Science 2020-07-27 Shasha Li , Shitong Zhu , Sudipta Paul , Amit Roy-Chowdhury , Chengyu Song , Srikanth Krishnamurthy , Ananthram Swami , Kevin S Chan

We consider adversarial examples for image classification in the black-box decision-based setting. Here, an attacker cannot access confidence scores, but only the final label. Most attacks for this scenario are either unreliable or…

Machine Learning · Statistics 2021-04-30 Thomas Brunner , Frederik Diehl , Michael Truong Le , Alois Knoll

Adversarial attacks and backdoor attacks are two common security threats that hang over deep learning. Both of them harness task-irrelevant features of data in their implementation. Text style is a feature that is naturally irrelevant to…

Computation and Language · Computer Science 2021-10-15 Fanchao Qi , Yangyi Chen , Xurui Zhang , Mukai Li , Zhiyuan Liu , Maosong Sun

Machine learning has been proven to be susceptible to carefully crafted samples, known as adversarial examples. The generation of these adversarial examples helps to make the models more robust and gives us an insight into the underlying…

Computation and Language · Computer Science 2020-12-29 Sachin Saxena

Recent advancements in natural language processing have highlighted the vulnerability of deep learning models to adversarial attacks. While various defence mechanisms have been proposed, there is a lack of comprehensive benchmarks that…

Computation and Language · Computer Science 2025-01-23 Yang Wang , Chenghua Lin