A hybrid optimization approach for securing cloud-based e-health systems. - Abdulhadi Altherwi; Mohammad Tauheed Ahmad; Md. Moddassir Alam; Hidayath Mirza; Nazia Sultana; Amjad Ali Pasha; Nishat Sultana; Asif Irshad Khan; Md. Mottahir Alam; Rezaul Azim (Multim. Tools Appl., 2025)