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Backdoor (Trojan) attack is a common threat to deep neural networks, where samples from one or more source classes embedded with a backdoor trigger will be misclassified to adversarial target classes. Existing methods for detecting whether…

Machine Learning · Computer Science 2023-11-17 Zhen Xiang , Zidi Xiong , Bo Li

Enterprises and organizations are faced with potential threats from insider employees that may lead to serious consequences. Previous studies on insider threat detection (ITD) mainly focus on detecting abnormal users or abnormal time…

Cryptography and Security · Computer Science 2024-03-19 Xiangrui Cai , Yang Wang , Sihan Xu , Hao Li , Ying Zhang , Zheli Liu , Xiaojie Yuan

Efficient anomaly detection and diagnosis in multivariate time-series data is of great importance for modern industrial applications. However, building a system that is able to quickly and accurately pinpoint anomalous observations is a…

Machine Learning · Computer Science 2022-05-17 Shreshth Tuli , Giuliano Casale , Nicholas R. Jennings

The security of deep neural networks (DNNs) has attracted increasing attention due to their widespread use in various applications. Recently, the deployed DNNs have been demonstrated to be vulnerable to Trojan attacks, which manipulate…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Jiawang Bai , Kuofeng Gao , Dihong Gong , Shu-Tao Xia , Zhifeng Li , Wei Liu

Real-time video analytics on the edge is challenging as the computationally constrained resources typically cannot analyse video streams at full fidelity and frame rate, which results in loss of accuracy. This paper proposes a Transprecise…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-04-30 JunKyu Lee , Blesson Varghese , Roger Woods , Hans Vandierendonck

Integrating SDN and the IoT enhances network control and flexibility. DL-based AAD systems improve security by enabling real-time threat detection in SDN-IoT networks. However, these systems remain vulnerable to adversarial attacks that…

Cryptography and Security · Computer Science 2025-10-01 Tharindu Lakshan Yasarathna , Nhien-An Le-Khac

We present a novel framework, Action Progression Network (APN), for temporal action detection (TAD) in videos. The framework locates actions in videos by detecting the action evolution process. To encode the action evolution, we quantify a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Chongkai Lu , Man-Wai Mak , Ruimin Li , Zheru Chi , Hong Fu

Anomaly detection (AD) plays a vital role across a wide range of real-world domains by identifying data instances that deviate from expected patterns, potentially signaling critical events such as system failures, fraudulent activities, or…

Machine Learning · Computer Science 2025-07-11 Amirhossein Sadough , Mahyar Shahsavari , Mark Wijtvliet , Marcel van Gerven

In recent years Deep Neural Networks (DNNs) have achieved remarkable results and even showed super-human capabilities in a broad range of domains. This led people to trust in DNNs' classifications and resulting actions even in…

Cryptography and Security · Computer Science 2020-12-14 Philip Sperl , Ching-Yu Kao , Peng Chen , Konstantin Böttinger

HTTP-based Trojan is extremely threatening, and it is difficult to be effectively detected because of its concealment and confusion. Previous detection methods usually are with poor generalization ability due to outdated datasets and…

Networking and Internet Architecture · Computer Science 2023-09-08 Jiang Xie , Shuhao Lia , Xiaochun Yun , Yongzheng Zhang , Peng Chang

Recent studies have revealed that GNNs are highly susceptible to multiple adversarial attacks. Among these, graph backdoor attacks pose one of the most prominent threats, where attackers cause models to misclassify by learning the…

Cryptography and Security · Computer Science 2024-10-21 Hao Sui , Bing Chen , Jiale Zhang , Chengcheng Zhu , Di Wu , Qinghua Lu , Guodong Long

Deep learning models have been shown to be vulnerable to recent backdoor attacks. A backdoored model behaves normally for inputs containing no attacker-secretly-chosen trigger and maliciously for inputs with the trigger. To date, backdoor…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Hua Ma , Yinshan Li , Yansong Gao , Alsharif Abuadbba , Zhi Zhang , Anmin Fu , Hyoungshick Kim , Said F. Al-Sarawi , Nepal Surya , Derek Abbott

In recent years, neural networks have become the default choice for image classification and many other learning tasks, even though they are vulnerable to so-called adversarial attacks. To increase their robustness against these attacks,…

Machine Learning · Computer Science 2020-02-10 Hasan Ferit Eniser , Maria Christakis , Valentin Wüstholz

One-stage object detection is commonly implemented by optimizing two sub-tasks: object classification and localization, using heads with two parallel branches, which might lead to a certain level of spatial misalignment in predictions…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Chengjian Feng , Yujie Zhong , Yu Gao , Matthew R. Scott , Weilin Huang

Recent studies revealed that deep neural networks (DNNs) are exposed to backdoor threats when training with third-party resources (such as training samples or backbones). The backdoored model has promising performance in predicting benign…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Chengxiao Luo , Yiming Li , Yong Jiang , Shu-Tao Xia

In this work, we study literature in Explainable AI and Safe AI to understand poisoning of neural models of code. In order to do so, we first establish a novel taxonomy for Trojan AI for code, and present a new aspect-based classification…

Software Engineering · Computer Science 2024-04-22 Aftab Hussain , Md Rafiqul Islam Rabin , Toufique Ahmed , Navid Ayoobi , Bowen Xu , Prem Devanbu , Mohammad Amin Alipour

Safety-critical domains like healthcare rely on deep neural networks (DNNs) for prediction, yet DNNs remain vulnerable to evasion attacks. Anomaly detectors (ADs) are widely used to protect DNNs, but conventional ADs are trained…

Cryptography and Security · Computer Science 2026-04-20 Mohammed Elnawawy , Gargi Mitra , Shahrear Iqbal , Karthik Pattabiraman

Deep neural network (DNN) classifiers are vulnerable to backdoor attacks. An adversary poisons some of the training data in such attacks by installing a trigger. The goal is to make the trained DNN output the attacker's desired class…

Machine Learning · Computer Science 2022-10-14 Hadi M. Dolatabadi , Sarah Erfani , Christopher Leckie

Real-time object tracking necessitates a delicate balance between speed and accuracy, a challenge exacerbated by the computational demands of deep learning methods. In this paper, we propose Confidence-Triggered Detection (CTD), an…

Computer Vision and Pattern Recognition · Computer Science 2024-11-14 Zhicheng Ding , Zhixin Lai , Siyang Li , Panfeng Li , Qikai Yang , Edward Wong

Deep neural networks (DNNs) have accomplished impressive success in various applications, including autonomous driving perception tasks, in recent years. On the other hand, current deep neural networks are easily fooled by adversarial…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Ibrahim Sobh , Ahmed Hamed , Varun Ravi Kumar , Senthil Yogamani