With the rapid development and increasing complexity of computer systems and communication networks, user requirements for trust, security and privacy are becoming more and more demanding. Therefore, there is a grand challenge that traditional security technologies and measures may not meet user requirements in open, dynamic, heterogeneous, mobile, wireless, and distributed computing environments. As a result, we need to build systems and networks in which various applications allow users to enjoy more comprehensive services while preserving trust, security and privacy at the same time. As useful and innovative technologies, trusted computing and communications are attracting researchers with more and more attention. The 12th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (IEEE TrustCom-13) will be held in Melbourne, Australia on 16-18 July, 2013. It follows the success of TrustCom-12 in Liverpool, United Kingdom, TrustCom-11 in Changsha, China, TrustCom-10 in Hong Kong SAR, China, TrustCom-09 in Vancouver, Canada, TrustCom-08 in Zhang Jia Jie, China and so on. The conference aims at bringing together researchers and practitioners in the world working on trusted computing and communications, with regard to trust, security, privacy, reliability, dependability, survivability, availability, and fault tolerance aspects of computer systems and networks, and providing a forum to present and discuss emerging ideas and trends in this highly challenging research field.