M. A. . Omer, A. A. . Yazdeen, H. S. . Malallah, and L. M. . Abdulrahman, “A Survey on Cloud Security: Concepts, Types, Limitations, and Challenges”, JASTT, vol. 3, no. 02, pp. 101–111, Dec. 2022, doi: 10.38094/jastt301137.