Ashari, D. R., Khusnul Khotimah, Putra, S. D. S., Shalih, A. D. Z. Z. N., Tambun, A. R. C., Putri, M. A. R., & Jessica Joylynn Kaligis. (2026). Blockchain and Data Security Management in Financial Services: A Strategic Evaluation with the COBIT 2019 Framework. Journal of Digital Business and Innovation Management, 5(1). https://doi.org/10.26740/jdbim.v5i1.67033