The IEEE Conference on Communications and Network Security (IEEE CNS) is a conference series in the IEEE Communications Society (ComSoc) core conference portfolio and the only ComSoc conference focusing solely on cybersecurity. IEEE CNS provides a premier forum for security researchers, practitioners, policy makers, and users to exchange ideas, techniques and tools, raise awareness, and share experience related to all practical and theoretical aspects of cybersecurity. Building on the success of the past eleven years of conferences, IEEE CNS 2025 seeks original high-quality technical papers from academia, government, and industry. Topics of interest encompass all practical and theoretical aspects of communications and network security, from the physical layer to the network layer to the variety of applications reliant on a secure communication substrate.