The rapidly evolving threat landscape and the recent observed increase in cyber-attacks from both state and non-state actors has created a cyber arms race. This necessitates the development of cyber security technologies that can be both cognitive and adaptive to emerging attack vectors while at the same time provide a high-level of assurance to users. We focus on developing intelligence-driven cyber security technologies that can effectively mitigate evolving and persistent cyber threats posed by adversaries and enable automated responses to cyber security attacks.