  Due to the ability to overcome the geospatial limitations and to the
possibility to converge the various information communication technologies, the
application domains and the market size of drones are increasing
internationally. Public authorities in South Korean are investing for the
domestic drone industry and the technological advancement as a power of
innovation and growth of the country. They are also increasing the utilization
of drones for various purposes.
  The South Korean government ensures the security of IT equipment introduced
to the public authorities by enforcing policies such as security compatibility
verification and CCTV security certification. Considering the increase of the
needs of drones and the possible security effects to the organization operating
them, the government needs to develop the security requirements during
introducing drones, but there are no such requirements yet.
  In this paper, we inspect the vulnerabilities of drones by analyzing the
applications of commercial drones made by 4 manufacturers. We also propose the
minimum security requirements to resolve the vulnerabilities. We expect our
work contributes to the security improvements of drones operated in public
authorities.
