The increasing popularity of the Internet-of-Things (IoT) has driven exponential growth in the number of IoT devices, which implies that a single vulnerability can be a critical life-threatening issue as shown in cases of automobiles and airplanes. Center for Software Security and Assurance (CSSA) is established for joint research with Korea University, CMU, Oxford University, ETH and KISA. The research in CSSA aims to develop core technologies to analyze and verify potential security vulnerabilities posed by IoT software and develop an automated analysis platform called IoTcube for enabling even non-security professionals to examine security vulnerabilities professionally. In this talk, the technologies in IoTcube and its ongoing efforts will be introduced including blackbox testing, whitebox testing, and network testing.