Welcome to the 6th International workshop on Dependable Network Computing and Mobile Systems (DNCMS2015) The DNCMS Workshop is part of the 34th IEEE International Symposium on Reliable Distributed Systems SRDS2015, to be held Sept.28 - Oct.1, 2015, McGill University, Montreal, QC, Canada. There will be exciting technical presentations and networking opportunities available at this workshop. The workshop intends to cover a full spectrum addressing dependability issues related to the design, analysis, and implementation, of infrastructures, systems, architectures, algorithms and protocols that deal with network computing and mobile/ubiquitous systems. The goal of this workshop is to provide a forum for researchers, scientists and engineers working in academia and industry to share their experiences, new ideas and research results in the areas of dependable network computing and mobile systems.