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With the popularity of deep learning (DL), artificial intelligence (AI) has been applied in many areas of human life. Neural network or artificial neural network (NN), the main technique behind DL, has been extensively studied to facilitate…

Cryptography and Security · Computer Science 2019-12-04 Minhui Zou , Yang Shi , Chengliang Wang , Fangyu Li , WenZhan Song , Yu Wang

Deep neural networks have achieved state-of-the-art performance on various tasks. However, lack of interpretability and transparency makes it easier for malicious attackers to inject trojan backdoor into the neural networks, which will make…

Cryptography and Security · Computer Science 2019-11-19 Xijie Huang , Moustafa Alzantot , Mani Srivastava

Large Language Models (LLMs) have demonstrated remarkable capabilities in various domains, but their vulnerability to trojan or backdoor attacks poses significant security risks. This paper explores the challenges and insights gained from…

Computation and Language · Computer Science 2024-04-23 Narek Maloyan , Ekansh Verma , Bulat Nutfullin , Bislan Ashinov

A backdoor or Trojan attack is an important type of data poisoning attack against deep neural network (DNN) classifiers, wherein the training dataset is poisoned with a small number of samples that each possess the backdoor pattern (usually…

Machine Learning · Computer Science 2023-03-15 H. Wang , S. Karami , O. Dia , H. Ritter , E. Emamjomeh-Zadeh , J. Chen , Z. Xiang , D. J. Miller , G. Kesidis

This study investigates the vulnerabilities of autonomous navigation and landing systems in Urban Air Mobility (UAM) vehicles. Specifically, it focuses on Trojan attacks that target deep learning models, such as Convolutional Neural…

Cryptography and Security · Computer Science 2025-10-27 Reza Ahmari , Ahmad Mohammadi , Vahid Hemmati , Mohammed Mynuddin , Mahmoud Nabil Mahmoud , Parham Kebria , Abdollah Homaifar , Mehrdad Saif

Model editing methods modify specific behaviors of Large Language Models by altering a small, targeted set of network weights and require very little data and compute. These methods can be used for malicious applications such as inserting…

Machine Learning · Computer Science 2025-09-08 Keltin Grimes , Marco Christiani , David Shriver , Marissa Connor

Backdoor attacks have been shown to be a serious threat against deep learning systems such as biometric authentication and autonomous driving. An effective backdoor attack could enforce the model misbehave under certain predefined…

Cryptography and Security · Computer Science 2021-12-01 Tong Wang , Yuan Yao , Feng Xu , Shengwei An , Hanghang Tong , Ting Wang

The backdoor or Trojan attack is a severe threat to deep neural networks (DNNs). Researchers find that DNNs trained on benign data and settings can also learn backdoor behaviors, which is known as the natural backdoor. Existing works on…

Machine Learning · Computer Science 2022-10-28 Zhenting Wang , Hailun Ding , Juan Zhai , Shiqing Ma

Deep neural networks (DNNs) have achieved tremendous success in various applications including video action recognition, yet remain vulnerable to backdoor attacks (Trojans). The backdoor-compromised model will mis-classify to the target…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Xi Li , Songhe Wang , Ruiquan Huang , Mahanth Gowda , George Kesidis

This paper addresses the problem of detecting trojans in neural networks (NNs) by analyzing systematically pruned NN models. Our pruning-based approach consists of three main steps. First, detect any deviations from the reference look-up…

Cryptography and Security · Computer Science 2021-02-10 Peter Bajcsy , Michael Majurski

Large language models (LLMs) have provided a lot of exciting new capabilities in software development. However, the opaque nature of these models makes them difficult to reason about and inspect. Their opacity gives rise to potential…

Software Engineering · Computer Science 2024-05-07 Aftab Hussain , Md Rafiqul Islam Rabin , Toufique Ahmed , Bowen Xu , Premkumar Devanbu , Mohammad Amin Alipour

While machine learning (ML) models are being increasingly trusted to make decisions in different and varying areas, the safety of systems using such models has become an increasing concern. In particular, ML models are often trained on data…

This paper highlights vulnerabilities of deep learning-driven semantic communications to backdoor (Trojan) attacks. Semantic communications aims to convey a desired meaning while transferring information from a transmitter to its receiver.…

Cryptography and Security · Computer Science 2022-12-22 Yalin E. Sagduyu , Tugba Erpek , Sennur Ulukus , Aylin Yener

Recent years have witnessed the emergence of a new paradigm of building natural language processing (NLP) systems: general-purpose, pre-trained language models (LMs) are composed with simple downstream models and fine-tuned for a variety of…

Cryptography and Security · Computer Science 2021-03-12 Xinyang Zhang , Zheng Zhang , Shouling Ji , Ting Wang

Recent advancements in Artificial Intelligence namely in Deep Learning has heightened its adoption in many applications. Some are playing important roles to the extent that we are heavily dependent on them for our livelihood. However, as…

Cryptography and Security · Computer Science 2020-08-05 Jonathan Pan

Deep neural networks are vulnerable to backdoor attacks (Trojans), where an attacker poisons the training set with backdoor triggers so that the neural network learns to classify test-time triggers to the attacker's designated target class.…

Machine Learning · Computer Science 2023-08-10 Hang Wang , Zhen Xiang , David J. Miller , George Kesidis

Logic locking has been proposed to safeguard intellectual property (IP) during chip fabrication. Logic locking techniques protect hardware IP by making a subset of combinational modules in a design dependent on a secret key that is withheld…

Cryptography and Security · Computer Science 2023-04-18 Hongye Xu , Dongfang Liu , Cory Merkel , Michael Zuzak

Time Series Classification (TSC) is highly vulnerable to backdoor attacks, posing significant security threats. Existing methods primarily focus on data poisoning during the training phase, designing sophisticated triggers to improve…

Cryptography and Security · Computer Science 2025-02-04 Chang Dong , Zechao Sun , Guangdong Bai , Shuying Piao , Weitong Chen , Wei Emma Zhang

Pre-trained vision models (PVMs) have become a dominant component due to their exceptional performance when fine-tuned for downstream tasks. However, the presence of backdoors within PVMs poses significant threats. Unfortunately, existing…

Computer Vision and Pattern Recognition · Computer Science 2023-12-27 Aishan Liu , Xinwei Zhang , Yisong Xiao , Yuguang Zhou , Siyuan Liang , Jiakai Wang , Xianglong Liu , Xiaochun Cao , Dacheng Tao