A Hybrid Multi-Factor Authentication System with GPS-Based on SPECK Encryption in Oil Cybersecurity. Applied Data Science and Analysis, [S. l.], v. 2026, p. 18–42, 2026. DOI: 10.58496/ADSA/2026/002. Disponível em: https://journals.mesopotamian.press/index.php/ADSA/article/view/1016. Acesso em: 14 jul. 2026.