Expression of Concern: An Artificial Intelligence-based System for Detecting Meta Fake Profiles via Gradient Boosting and Multilayer Perception. Mesopotamian Journal of CyberSecurity, [S. l.], v. 2026, n. 1, p. 13–13, 2026. DOI: 10.58496/2026/013. Disponível em: https://mesopotamian.press/journals/index.php/CyberSecurity/article/view/1037. Acesso em: 28 feb. 2026.