Expression of Concern: An Effective Feature Optimization Model for Android Malware Detection. Mesopotamian Journal of CyberSecurity, [S. l.], v. 2026, n. 1, p. 8–8, 2026. DOI: 10.58496/2026/008. Disponível em: https://mesopotamian.press/journals/index.php/CyberSecurity/article/view/1032. Acesso em: 28 feb. 2026.