CODASPY

It is our great pleasure to welcome you to the fifth edition of the ACM Conference on Data and Application Security and Privacy (CODASPY 2015), which follows the successful four editions held in February/March 2011, 2012, 2013 and 2014. This conference series has been founded to foster novel and exciting research in this arena and to help generate new directions for further research and development. The initial concept came up in a conversation between the two co-founders when both happened to be at the same meeting. This was followed by discussions with a number of fellow cyber security researchers. Their enthusiastic encouragement persuaded the co-founders to move ahead with the always daunting task of creating a highquality conference.

Data and applications that manipulate data are crucial assets in today's information age. With the increasing drive towards availability of data and services anytime and anywhere, security and privacy risks have increased. Vast amounts of privacy-sensitive data are being collected today by organizations for a variety of reasons. Unauthorized disclosure, modification, usage or denial of access to these data and corresponding services may result in high human and financial costs. New applications such as social networking and social computing provide value by aggregating input from numerous individual users and the mobile devices they carry and computing new information of benefit to society and individuals. To achieve efficiency and effectiveness in traditional domains such as healthcare there is a drive to make these records electronic and highly available. The need for organizations to share information effectively is underscored by rapid innovations in the business world that require close collaboration across traditional boundaries. Security and privacy in these and other arenas can be meaningfully achieved only in context of the application domain. Data and applications security and privacy has rapidly expanded as a research field with many important challenges to be addressed.

In response to the call for papers of CODASPY 2015 a total of 91 papers were submitted from Asia, Australia, Europe, and North America (87 were eventually reviewed). The program committee selected 19 full-length research papers (21% of acceptance rate). These papers cover a variety of topics, including privacy of outsourced data, novel privacy techniques and applications, and access control and security of smart appliances and mobile devices. The program committee also selected 8 short papers for presentation. The program also includes a poster paper session presenting exciting work in progress, as well as a panel session led by Bhavani Thuraisingham on Big Data Security and Privacy. The program is complemented by keynote speeches by William Horne and Günter Karioth. This year for the first time there will be a colocated workshop on Security and Privacy Analytics (IWSPA15).