[1] Universitas Dian Nuswantoro, Department of Computer Science, Semarang, Indonesia
[2] Pandonga Creatives, Semarang, Indonesia
[3] Universitas Dian Nuswantoro, Department of Information System, Semarang, Indonesia
[4] Direktorat Intelijen Keamanan Polda Jawa Tengah, Semarang, Indonesia