Applications are invited for several funded Ph.D. positions at the Department of Computer Science of the Missouri University of Science and Technology. Communication networks are an inherent part of our life for a wide range of activities. These networks have increased in size, complexity, heterogeneity, energy demand and interdependence with other networks. These aspects open new research problems, which need to be tackled in order to improve the security and efficiency of these networks. The general goal of the Ph.D.