Cyber attack scenarios on smart city and their ripple effects

In recent years, nations have been establishing policies to construct smart cities and promote their operation at the national level and competing with one another through the support of the required resources. Smart cities are futuristic state-of-the-art cities wherein all components of the urban infrastructure are inter-operated through networks using the core technologies in the Fourth Industrial Revolution and ICT(Information and Communication Technology). Various kinds of on-site state information are collected and monitored by installing sensors that are IoT(Internet of Things) devices in various services, and on-site controlling devices are controlled remotely if needed. Smart cities face increasing cyber security threats compared to existing cities as advanced technologies are utilized, so the importance of cyber security and user privacy has increased. In this study, security threats against the smart city architecture are analyzed, and possible cyber-attack scenarios in the construction of services and operation environment are identified and analyzed. The ripple effects of each attack are also analyzed. The analysis results in this study can be utilized in security technology research and development and applications in the future.