To cope with the rapid increase in mobile users and the increasing demand for mobile, wireless and sensor networks (MWSNs), it is becoming imperative to provide the necessary security protocols and privacy guarantees to users of MWSNs. In turn, these specific demands in security and privacy require new methodologies that are specifically designed to cope with the strict requirements of the networks. In general, the real-world performance of MWSNs crucially depends on the selected protocols, and their suitability and efficiency for the layers of the implementation. A satisfactory security design and protocol are therefore crucial for the performance of MWSNs. It is a great challenge to achieve efficient and robust realizations of such highly dynamic and secure MWSNs. Moreover, the study of security and privacy in the context of MWSNs provides insights into problems and solutions that are orthogonal to programming languages, programming paradigms, computer hardware, and other aspects of the implementation. The objective for this workshop is to address those topics, which we believe will play an important role in current and future research on and education of MWSNs.