SACMAT 2015 http://www.sacmat.org 20th ACM Symposium on Access Control Models and Technologies, Vienna, Austria, June 1-3, 2015 (Submission Due January 20, 2015) The ACM Symposium on Access Control Models and Technologies (SACMAT) is the premier forum for the presentation of research results and experience reports on leading edge issues of access control, including models, systems, applications, and theory. The aims of the symposium are to share novel access control solutions that fulfil the needs of heterogeneous applications and environments, and to identify new directions for future research and development. SACMAT provides researchers and practitioners with a unique opportunity to share their perspectives with others interested in the various aspects of access control. Papers offering novel research contributions in all aspects of access control are solicited for submission to the 20th ACM Symposium on Access Control Models and Technologies (SACMAT 2015). Accepted papers will be presented at the symposium and published by the ACM in the symposium proceedings. Topics of interest include but are not limited to: - Access Intelligence - Administration - Applications - Attribute-based systems - Authentication - Big data - Biometrics - Cloud computing - Cryptographic approaches - Cyber-physical systems - Databases and data management - Design methodology - Distributed and mobile systems - Economic models and game theory - Enforcement - Hardware enhanced - Identity management - Mechanisms, systems, and tools - Models and extensions - Obligations - Policy engineering and analysis - Requirements - Risk - Safety analysis - Standards - Theoretical foundations - Trust management - Usability For more information, please see: http://www.sacmat.org/