Balaji Sathyamurthy, S.S. 2025. A Multi‑Layer Federated Architecture for Secure Cross‑Institution Fraud Detection. International Journal of AI, BigData, Computational and Management Studies. 6, 4 (Dec. 2025), 319–335. DOI:https://doi.org/10.63282/3050-9416.IJAIBDCMS-V6I4P138.