OICC Press Majlesi Journal of Electrical Engineering 2345-3796 19 2 2025 06 01 Advances in network security and new anomaly detection techniques 10.57647/j.mjee.2025.1902.26 EN Sajad Balali Dehkordi Department of Electrical Engineering, Na.C., Islamic Azad University, Najafabad, Iran https://orcid.org/0009-0000-8812-956X Saeed Nasri Department of Electrical Engineering, Na.C., Islamic Azad University, Najafabad, Iran; Digital Processing and Machine Vision Research Center, Na.C., Islamic Azad University, Najafabad, Iran https://orcid.org/0000-0002-2225-6707 Sina Dami Department of Computer Engineering, WT.C., Islamic Azad University, Tehran, Iran https://orcid.org/0000-0002-1309-5913 Journal Article 2025 06 01 Anomaly detection in diverse domains is confronted with the challenges posed by the increasing volume, velocity, and complexity of data. This paper presents a comprehensive review of recent advancements and research trends in anomaly detection across various domains, including high-dimensional big data, sensor systems, information and communication technology, IoT data, energy consumption, and real-time networks amidst cyber-attacks. Through a systematic analysis of recent literature, this review synthesizes key findings, methodologies, and challenges, providing insights into current strategies and future directions for anomaly detection technology. The reviewed papers highlight the importance of addressing domain-specific challenges, fostering interdisciplinary collaboration, and advancing methodological innovation to develop robust, scalable, and effective anomaly detection solutions capable of meeting the evolving demands of today's data-driven world.