The Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) is the most prestigious international forum for presenting the very best research results, problem solutions and insights on new challenges in the field of dependable computing and security. These challenges have been important in the IT society and is essential to economy prosperity and stability and personal safety. This edition of DSN will be the first innitiative in the south hemisphere and will be held in Rio de Janeiro, Brazil – marvellous city. Authors are invited to submit original papers on the research and practice of creating, validating, deploying, and maintaining dependable and secure systems and networks. We are planning a rich program for DSN 2015, including plenary talks, regular papers, experience reports, panels, student forum, fast abstracts, industrial track, demonstrations of tools and technologies, debate sessions, together with state-of-the-art workshops and a tutorials. We need your contribution and participation to make it a successful event!! All aspects of dependable and secure systems and networks are within the scope of DSN, including innovative architectures, protocols and algorithms, as well as, experimentation with and assessment of dependable and secure systems.