This chapter examines five main aspects of delivering secure tests and examinations via online methods. First, the importance of understanding the problem of test cheating is discussed. Existing guidelines that help shape computerized test delivery are reviewed for how they manage test administration processes. A taxonomy of different types of cheating is presented and solutions to important security issues in online assessment are considered. Last, future trends in deterring and detecting cheating are proposed. Furthermore, the authors hope that understanding the threats to online test security and considering the options to solve these problems, will provide a forum for reducing test theft and increasing integrity for test takers and test sponsors alike.