  As technology advances, it is possible to process a lot of data, and as
various elements in the city become diverse and complex, cities are becoming
smart cities. One of the core systems of smart cities is
Cooperative-Intelligent Transport Systems (C-ITS). C-ITS is a system that
provides drivers with real-time accident risk information such as surrounding
traffic conditions, sudden stops, and falling objects while a vehicle is
driving, and consists of road infrastructure, C-ITS center, and vehicle
terminals. Meanwhile, smart cities can have cybersecurity problems because many
elements of the city are networked and electronically controlled. If
cybersecurity problems occur in C-ITS, there is a high risk of safety problems.
The purpose of this technical document is to describe C-ITS environment
modeling and C-ITS attack scenarios for C-ITS security. After describing the
concept of C-ITS and MITRE ATT&CK, we describe the C-ITS environment model and
the attack scenario model that we define.
