The proliferation of computational resources and data networks has enabled the conception and solution of information management problems of an unprecedented scale. These technologies expose vulnerabilities that may be exploited through happenstance or design. The engineering problems encountered in the design of networked data systems and software are familiar in the controls community: resource allocation and management, distributed decision-making, time-delay systems, discrete-event and hybrid systems analysis and design, detection and identification, stability, robustness and reliability, and large-scale systems.