Desain Kerangka Kerja Keamanan Informasi Berdasarkan Kombinasi C2M2 Version 2.1, ISO 27019 dan PP 71:2019 (Studi Pemberhentian Swastanisasi Sektor Air Minum Perusahaan ABC Kota XYZ) = Design of an Information Security Framework Using C2M2 Version 2.1, ISO 27019, and PP 71:2019 (A Case Study on the End of Water Supply Privatization in ABC Company, XYZ City)