Nowadays, a number of countries are developing alternative approaches to handling their cybersecurity, including Indonesia. Badan Siber dan Sandi Nasional (State Cyber and Cryptography Agency (BSSN)) as an institution appointed by the Indonesian government to be the national cybersecurity coordinator has the responsibility to securing the national critical information infrastructure (IIKN). The IIKN responsible for governmental and private infrastructures including the energy, transportation, finance and banking, information and communication technology, defense and strategic industries, and health sectors. This study tries to investigate how the complex nature of cyberspace, as well as the complexity of public-private relations in securing cyberspace, might be solved through a Public-Private Partnership (PPP) approach. By using qualitative methods based on the main data sources of interviews and supported by books, journals, articles, and internet sources, this study tries to find out whether the PPP on Cybersecurity can be used as an alternative approach in building Indonesia's cybersecurity architecture. It also examines the challenges that arise in the implementation of PPP, especially related to formal agreements and frameworks and informal cooperation between the government and the private sector related to cybersecurity, given the sensitivity of the issue of cybersecurity in Indonesia.
Keywords: public-private partnership, cyber security, Indonesia.