ECBS-EERC was established at 15th IEEE International Conference on Engineering of Computer-Based Systems (ECBS 2008) in Belfast, Northern Ireland, to bring the spirit of ECBS into Eastern Europe by providing convenient conference opportunities in this region. Conference proceedings are published on a CD and submitted to the IEEE CS Digital Library. A selection of outstanding papers presented at the conference may be invited for publication in an internationally recognized journal (subject to additional reviewing). ECBS-EERC 2013 is the 3rd formal meeting dedicated to formulating and advancing methods, techniques and tools for the engineering of computer-based systems in the Eastern European Region. The conference is devoted to the design, development, deployment, and analysis of complex systems whose behavior is largely determined or controlled by computers. Such systems are characterized by functional, performance, and reliability requirements that mandate the tight integration of information processing and physical processes. ECBS integrates software, hardware, and communication perspective of system engineering through its many facets that include system modeling, requirements specification, simulation, architectures, safety, security, reliability, human–computer interaction, system integration, verification and validation, and project management. The conference provides a bridge between industry and academia blending academic research and industrial development.