Qadium proposes a research and development effort to use openly available data to understand and probe potential risks that the data, as an aggregate, may pose to the Department of Defense, the Intelligence Community, and to US critical infrastructure. Specifically, we plan to demonstrate new vulnerability analyses by using open data to reconstruct organizational information that is otherwise intentionally hidden, and to map potential cyber threats identified by publicly distributed data, and explore mitigation and defensive strategies that preserve the value of open data.