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Sovereign network functions, e.g., routing protocols, are becoming increasingly complex and susceptible to failures arising from protocol configuration anomalies and anomalous configurations. This paper interprets the protocol configuration…

网络与互联网体系结构 · 计算机科学 2026-05-19 Xin Hao , Wei Ni , Chenhan Zhang , Massimo Piccardi , Raymond Owen

Anomaly-based cyber threat detection using deep learning is on a constant growth in popularity for novel cyber-attack detection and forensics. A robust, efficient, and real-time threat detector in a large-scale operational enterprise…

密码学与安全 · 计算机科学 2024-10-30 Krishna Chandra Roy , Qian Chen

In general, anomaly detection is the problem of distinguishing between normal data samples with well defined patterns or signatures and those that do not conform to the expected profiles. Financial transactions, customer reviews, social…

机器学习 · 计算机科学 2022-06-10 Paul Irofti , Andrei Patrascu , Andra Baltoiu

Graph anomaly detection aims to identify anomaly nodes in attributed graphs and plays an important role in real-world applications. However, existing graph anomaly detection methods still face two key challenges: 1) fixed pipelines, which…

机器学习 · 计算机科学 2026-05-28 Tairan Huang , Qiang Chen , Yili Wang , Yueyue Ma , Changlong He , Xiu Su , Yi Chen

Anomaly detection is a critical task in cybersecurity, where identifying insider threats, access violations, and coordinated attacks is essential for ensuring system resilience. Graph-based approaches have become increasingly important for…

密码学与安全 · 计算机科学 2026-03-31 Laura Jiang , Reza Ryan , Qian Li , Nasim Ferdosian

A graph-based sampling and consensus (GraphSAC) approach is introduced to effectively detect anomalous nodes in large-scale graphs. Existing approaches rely on connectivity and attributes of all nodes to assign an anomaly score per node.…

机器学习 · 计算机科学 2019-10-23 Vassilis N. Ioannidis , Dimitris Berberidis , Georgios B. Giannakis

Graph anomaly detection has long been an important problem in various domains pertaining to information security such as financial fraud, social spam and network intrusion. The majority of existing methods are performed in an unsupervised…

机器学习 · 计算机科学 2024-08-27 Xiongxiao Xu , Kaize Ding , Canyu Chen , Kai Shu

Unsupervised graph-level anomaly detection (UGAD) has attracted increasing interest due to its widespread application. In recent studies, knowledge distillation-based methods have been widely used in unsupervised anomaly detection to…

机器学习 · 计算机科学 2024-07-02 Rui Cao , Shijie Xue , Jindong Li , Qi Wang , Yi Chang

Graph Anomaly Detection (GAD) has recently become a hot research spot due to its practicability and theoretical value. Since GAD emphasizes the application and the rarity of anomalous samples, enriching the varieties of its datasets is…

社会与信息网络 · 计算机科学 2023-06-12 Xuanwen Huang , Yang Yang , Yang Wang , Chunping Wang , Zhisheng Zhang , Jiarong Xu , Lei Chen , Michalis Vazirgiannis

In the Internet of Things (IoT) devices are exposed to various kinds of attacks when connected to the Internet. An attack detection mechanism that understands the limitations of these severely resource-constrained devices is necessary. This…

密码学与安全 · 计算机科学 2017-01-25 Nidhi Rastogi , James Hendler

The task of graph-level anomaly detection (GLAD) is to identify anomalous graphs that deviate significantly from the majority of graphs in a dataset. While deep GLAD methods have shown promising performance, their black-box nature limits…

机器学习 · 计算机科学 2026-02-12 Qiuran Zhao , Kai Ming Ting , Xinpeng Li

Graph anomaly detection (GAD) is crucial in applications like fraud detection and cybersecurity. Despite recent advancements using graph neural networks (GNNs), two major challenges persist. At the model level, most methods adopt a…

机器学习 · 计算机科学 2026-02-06 Chunyu Wei , Siyuan He , Yu Wang , Yueguo Chen , Yunhai Wang , Bing Bai , Yidong Zhang , Yong Xie , Shunming Zhang , Fei Wang

In the web era, graph machine learning has been widely used on ubiquitous graph-structured data. As a pivotal component for bolstering web security and enhancing the robustness of graph-based applications, the significance of graph anomaly…

机器学习 · 计算机科学 2024-01-25 Wenjing Chang , Kay Liu , Kaize Ding , Philip S. Yu , Jianjun Yu

Unsupervised graph anomaly detection (GAD) has received increasing attention in recent years, which aims to identify data anomalous patterns utilizing only unlabeled node information from graph-structured data. However, prevailing…

机器学习 · 计算机科学 2025-11-14 Jiazhen Chen , Xiuqin Liang , Sichao Fu , Zheng Ma , Weihua Ou

Network Intrusion Detection Systems (NIDS) are essential tools for detecting network attacks and intrusions. While extensive research has explored the use of supervised Machine Learning for attack detection and characterisation, these…

密码学与安全 · 计算机科学 2026-04-23 Georgios Anyfantis , Pere Barlet-Ros

Graph-level anomaly detection (GLAD) is crucial for ensuring the reliability of graph-driven applications by identifying abnormal graphs that deviate from the majority. Considering the privacy concerns in distributed scenarios, federated…

机器学习 · 计算机科学 2026-05-12 Yunfeng Zhao , Yixin Liu , Qingfeng Chen , Shiyuan Li , Yue Tan , Shirui Pan

Graph Anomaly Detection (GAD) is a technique used to identify abnormal nodes within graphs, finding applications in network security, fraud detection, social media spam detection, and various other domains. A common method for GAD is Graph…

机器学习 · 计算机科学 2025-01-28 Amit Roy , Juan Shu , Jia Li , Carl Yang , Olivier Elshocht , Jeroen Smeets , Pan Li

Graph Anomaly Detection (GAD) aims to identify uncommon, deviated, or suspicious objects within graph-structured data. Existing methods generally focus on a single graph object type (node, edge, graph, etc.) and often overlook the inherent…

机器学习 · 计算机科学 2024-11-12 Yiqing Lin , Jianheng Tang , Chenyi Zi , H. Vicky Zhao , Yuan Yao , Jia Li

A critical aspect of Graph Neural Networks (GNNs) is to enhance the node representations by aggregating node neighborhood information. However, when detecting anomalies, the representations of abnormal nodes are prone to be averaged by…

机器学习 · 计算机科学 2024-07-03 Chunjing Xiao , Shikang Pang , Xovee Xu , Xuan Li , Goce Trajcevski , Fan Zhou

Abusive behaviors are common on online social networks. The increasing frequency of antisocial behaviors forces the hosts of online platforms to find new solutions to address this problem. Automating the moderation process has thus received…

社会与信息网络 · 计算机科学 2021-01-21 Noé Cecillon , Vincent Labatut , Richard Dufour , Georges Linares