This article explains the use of people's personal data to state security data that is currently interconnected and circulating on the internet network. Regulation of the Minister of Defense No. 16 years 2010 which mandated the establishment of a digital technology defense concept in Indonesia.  Data surveillance is carried out physically and logically with integrity and upholding confidentiality be able to find illegal processes.  Continued with this capacity and capability improvement as a must to be able to continue to innovate and develop because over time the types of threats and challenges will change and develop.  As a support, qualified digital or cyber technology system is built first. Thus, it is hoped that the cyber defense strategy in Indonesia can guarantee sovereignty and security for the nation and state.  With  the aim of developing human resources to meet the needs of personnel in national cybersecurity activities. The Indonesian government has realized that this development requires policy as a measurable and clear legal basis which is then followed by the establishment of a strategic cybersecurity system. Thus, it is hoped that the security of citizens in conducting activities in the digital world can be well guaranteed their rights and obligations.

One source of national wealth is airspace. There is a lot of potential in the airspace, including defense and commercial potential. However, the management of airspace in Indonesia is still not optimal. This can be analyzed from airspace issues related to the Indonesian FIR area on the border of the Natuna Islands. There is still overlap with the neighborhod country, Singapore, regarding the authority to control, use and regulate the Fligt Information Region (FIR) which could impact security and air defense if not resolved immediately. That's why this article presents insights through the literacy method regarding evaluating the use of radar technology to strengthen the defense and sovereignty of Indonesia's airspace. The evaluation was carried out in terms of the hazard related to the threat of jamming issues and flight incidents that occurred. Next, analyze the vulnerabilities related to the characteristics of the FIR and the distribution of radar capabilities. The last evaluation is related to capacity starting from the budget, policies, human resources to the infrastructure owned by air defense in Indonesia. So that from the elaboration of the evaluation it is hoped that it can become one of the inputs and insights to increase the usefulness of radar in order to strengthen defense and fully acquire the sovereignty of Indonesia's airspace.