Green, O., Yusuf, S., Abdulrazaq, M., Yahaya, B., Haruna, Z., Ore-Ofe, A., Omogoye, S., Adegoke, A. and Salami, S. 2025. Anomaly Detection in Portal System Networks: A Hybrid EMLOA-OCSVM Approach and Review of Challenges. European Scientific Journal, ESJ. 21, 24 (Aug. 2025), 21. DOI:https://doi.org/10.19044/esj.2025.v21n24p21.