This volume contains 20 challenges organized by increasing levels of complexity with one challenge per chapter. The challenges cover many areas of information security including Web content, VPNs, denial of service, wireless issues, e-commerce, and email attacks. Each challenge offers a statement of the problem, any background and ancillary information, complete evidence of problem, and specific questions to help the reader solve the problem. The solutions include in-depth analysis of what happened and how the scenario was solved, including specific answers to the questions posed at the end of each challenge. In addition to Mike Schiffman, experienced security consultants from a variety of top security firms contribute their expertise and challenges.