Wardhani, Widiastuti, Benfano Soewito, and Muhammad Zarlis. “Information Security Evaluation Using Case Study Information Security Index on Licensing Portal Applications”. Journal of Information Systems and Informatics 5, no. 4 (November 29, 2023): 1204-1220. Accessed December 19, 2025. https://journal-isi.org.adsii.or.id/index.php/isi/article/view/563.