Abstract: Due to recent development of the "Internet of Things" technology, varieties of smart home industries have entered golden age. Smart home is closely linked to our daily life and therefore, easily exposed to security threats. A smart home is composed of three main components: smart device, network and application. In this study, we analyzed vulnerabilities and security threats regarding component of smart home. Additionally, we suggested applicable security consideration depending on qualitative threat analysis in accordance with possibilities of potential security threats and risk.