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Backdoor attacks allow an attacker to embed functionality jeopardizing proper behavior of any algorithm, machine learning or not. This hidden functionality can remain inactive for normal use of the algorithm until activated by the attacker.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Alexander Unnervik , Sébastien Marcel

Graph anomaly detection (GAD) is increasingly crucial in various applications, ranging from financial fraud detection to fake news detection. However, current GAD methods largely overlook the fairness problem, which might result in…

Machine Learning · Computer Science 2025-03-04 Wenjing Chang , Kay Liu , Philip S. Yu , Jianjun Yu

The proliferation of sophisticated AI-generated deepfakes poses critical challenges for digital media authentication and societal security. While existing detection methods perform well within specific generative domains, they exhibit…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Naseem Khan , Tuan Nguyen , Amine Bermak , Issa Khalil

Graph Anomaly Detection (GAD) aims to identify nodes that deviate from the majority within a graph, playing a crucial role in applications such as social networks and e-commerce. Despite the current advancements in deep learning-based GAD,…

Machine Learning · Computer Science 2025-08-20 Yunfeng Zhao , Yixin Liu , Shiyuan Li , Qingfeng Chen , Yu Zheng , Shirui Pan

`Anytime, Anywhere' data access model has become a widespread IT policy in organizations making insider attacks even more complicated to model, predict and deter. Here, we propose Gargoyle, a network-based insider attack resilient framework…

Cryptography and Security · Computer Science 2018-07-10 Arash Shaghaghi , Salil S. Kanhere , Mohamed Ali Kaafar , Elisa Bertino , Sanjay Jha

Insider threat is one of the most pernicious threat vectors to information and communication technologies (ICT)across the world due to the elevated level of trust and access that an insider is afforded. This type of threat can stem from…

Cryptography and Security · Computer Science 2021-02-11 Nidhi Rastogi , Qicheng Ma

The widespread dissemination of fake news on social media poses significant risks, necessitating timely and accurate detection. However, existing methods struggle with unseen news due to their reliance on training data from past events and…

Social and Information Networks · Computer Science 2025-03-07 Shuzhi Gong , Richard Sinnott , Jianzhong Qi , Cecile Paris

Face anti-spoofing (FAS) and adversarial detection (FAD) have been regarded as critical technologies to ensure the safety of face recognition systems. However, due to limited practicality, complex deployment, and the additional…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Jiawei Chen , Xiao Yang , Yinpeng Dong , Hang Su , Zhaoxia Yin

Detecting coordinated inauthentic behavior on social media remains a critical and persistent challenge, as most existing approaches rely on superficial correlation analysis, employ static parameter settings, and demand extensive and…

Artificial Intelligence · Computer Science 2026-01-05 Weng Ding , Yi Han , Mu-Jiang-Shan Wang

We introduce Neural Contextual Anomaly Detection (NCAD), a framework for anomaly detection on time series that scales seamlessly from the unsupervised to supervised setting, and is applicable to both univariate and multivariate time series.…

Machine Learning · Computer Science 2021-07-19 Chris U. Carmona , François-Xavier Aubet , Valentin Flunkert , Jan Gasthaus

Analysis of an organization's computer network activity is a key component of early detection and mitigation of insider threat, a growing concern for many organizations. Raw system logs are a prototypical example of streaming data that can…

Neural and Evolutionary Computing · Computer Science 2017-12-19 Aaron Tuor , Samuel Kaplan , Brian Hutchinson , Nicole Nichols , Sean Robinson

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…

Cryptography and Security · Computer Science 2024-10-30 Krishna Chandra Roy , Qian Chen

Traditional security scanners fail when facing new attack patterns they haven't seen before. They rely on fixed rules and predetermined signatures, making them blind to novel threats. We present a fundamentally different approach: instead…

Cryptography and Security · Computer Science 2025-11-21 Ayush Chaudhary

As a crucial element of public security, video anomaly detection (VAD) aims to measure deviations from normal patterns for various events in real-time surveillance systems. However, most existing VAD methods rely on large-scale models to…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Jiahao Lyu , Minghua Zhao , Xuewen Huang , Yifei Chen , Shuangli Du , Jing Hu , Cheng Shi , Zhiyong Lv

Face forgery generation technologies generate vivid faces, which have raised public concerns about security and privacy. Many intelligent systems, such as electronic payment and identity verification, rely on face forgery detection.…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Zhaoyu Chen , Bo Li , Kaixun Jiang , Shuang Wu , Shouhong Ding , Wenqiang Zhang

Forensic analysis of manipulated pixels requires the identification of various hidden and subtle features from images. Conventional image recognition models generally fail at this task because they are biased and more attentive toward the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Sowmen Das , Md. Saiful Islam , Md. Ruhul Amin

Face detection is essential to facial analysis tasks such as facial reenactment and face recognition. Both cascade face detectors and anchor-based face detectors have translated shining demos into practice and received intensive attention…

Computer Vision and Pattern Recognition · Computer Science 2019-03-27 Baosheng Yu , Dacheng Tao

This paper presents a new method for anomaly detection in automated systems with time and compute sensitive requirements, such as autonomous driving, with unparalleled efficiency. As systems like autonomous driving become increasingly…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Andrew Gao , Jun Liu

Use of social network is the basic functionality of today's life. With the advent of more and more online social media, the information available and its utilization have come under the threat of several anomalies. Anomalies are the major…

Networking and Internet Architecture · Computer Science 2018-04-20 Vishal Sharma , Ravinder Kumar , Wen-Huang Cheng , Mohammed Atiquzzaman , Kathiravan Srinivasan , Albert Y. Zomaya

The escalating threat of cyberattacks on real-time critical infrastructures poses serious risks to public safety, demanding detection methods that effectively capture complex system interdependencies and adapt to evolving attack patterns.…

Machine Learning · Computer Science 2025-07-22 Arun Vignesh Malarkkan , Dongjie Wang , Haoyue Bai , Yanjie Fu