Perancangan tata kelola keamanan informasi berdasarkan Information Security Management System (ISMS) ISO/IEC 27001:2005 untuk pengelolaan data migas yang dikelola oleh pihak ketiga: studi kasus Pusat Data dan Teknologi Informasi Energi dan Sumber Daya Mineral = Design of information security overnance based on Information Security Management System (ISMS) ISO/IEC 27001:2005 for oil and gas data management that are managed by third parties: a case study at Data and Information Technology Center for Energy and Mineral Resource / Dian Ikasari