TrustBus'2015: The 12th International Conference on TRUST, PRIVACY AND SECURITY IN DIGITAL BUSINESS, Valencia/Spain, 1-2 September 2015 [Submission deadline: 22 March 2015] TrustBus'2015 will bring together researchers from different disciplines, developers, and users all interested in the critical success factors of digital business systems. We are interested in papers, work-in-progress reports, and industrial experiences describing advances in all areas of digital business applications related to trust and privacy, including, but not limited to: * Anonymity and pseudonymity in business transactions * Business architectures and underlying infrastructures * Common practice, legal and regulatory issues * Cryptographic protocols * Delivery technologies and scheduling protocols * Design of businesses models with security requirements * Economics of Information Systems Security * Electronic cash, wallets and pay-per-view systems * Enterprise management and consumer protection * Identity and Trust Management * Intellectual property and digital rights management * Intrusion detection and information filtering * Languages for description of services and contracts * Management of privacy & confidentiality * Models for access control and authentication * Multimedia web services * New cryptographic building-blocks for e-business applications * Online transaction processing * PKI & PMI * Public administration, governmental services * P2P transactions and scenarios * Real-time Internet E-Services * Reliability and security of content and data * Reliable auction, e-procurement and negotiation technology * Reputation in services provision * Secure process integration and management * Security and Privacy models for Pervasive Information Systems * Security Policies * Shopping, trading, and contract management tools * Smartcard technology * Transactional Models * Trust and privacy issues in mobile commerce environments * Usability of security technologies and services For more information, please see: http://www.ds.unipi.gr/trustbus15/