Modern courseware production have one of the drawbacks like high cost involved in producing high-quality and up-to-date courseware. Multiple-use and re-use are two key factors to solve this problem. The tasks of producing multi-usable or re-usable courseware are eased by constructing courseware in small learning units that keep courseware highly modular and self-contained.
Module-based courseware development has become a popular, widely accepted and successful approach with many advantages. For example, courseware can be rapidly customized, easily managed, and be less costly in many cases, when compared to traditional methods.

Dr. Andrew Yang has led the team of five UHCL/UHD faculty members and several graduate students in designing computer security laboratories and courseware modules. The project team has worked on designing network prototypes, studying the various equipments (servers, routers, switches, etc.), investigating Internet connectivity options (mainly DSL), developing the network architecture, deploying the networks, and developing lab projects related to various topics about computer and network security. The first two years of the project have successfully produced a prototype network, a server network, a teaching classroom, and several computer security lab modules.