PRISMS' focus is the convergence of information and communication technology in mobile scenarios. This convergence is realised in intelligent mobile devices, accompanied by the increasing importance of heterogeneous access networks networks such as 3G, 4G, LTE, WiFi, PAN, NFC, etc. Privacy and security aspects need to be covered at all layers of mobile communication, from devices, over privacy-respecting credentials and mobile identity management, to machine-to-machine communications. In particular, mobile devices such as Smartphones and Internet Tablets have been very successful in commercialization. However, their security mechanisms are not always able to deal with the growing threat of attacks. As mobile communication and information processing becomes a commodity, economy and society requires protection of this precious resource. Mobility and trust in networking go hand in hand for future generations of users, who need privacy and security at all layers of technology. In addition, the introduction of new data collection practices and data-flows (e.g. sensing data) from mobile devices makes it more difficult to understand the new security and privacy threats introduced. PRISMS strives to bring together the leading-edge of academia and industry in mobile systems security, as well as practitioners, standards developers and policymakers. Contributions may range from architecture designs and implementations to cryptographic solutions for mobile and resource-constrained devices.