Critical Infrastructure Protection IV is a specialized book that addresses the security of critical infrastructures essential for the functioning of various sectors. These infrastructures include areas such as information technology, telecommunications, energy, healthcare, and many more. The book is the fourth volume in an annual series published by the IFIP Working Group 11.10. It brings together the expertise of researchers, engineers, practitioners, and policymakers dedicated to research and development in the field of critical infrastructure. This volume presents original research findings and innovative applications aimed at developing solutions to secure information, computer, and network resources. The authors emphasize the need to integrate science, technology, and policy to create viable approaches for enhancing security across different critical infrastructure sectors.