Pervasive computing is now penetrating a wider range of domains and applications, including many safety-critical cyber-physical systems that we increasingly depend on. Trusted hardware platforms make up the backbone for successful deployment and operation of these systems. However, recent advances in tampering and reverse engineering show that important challenges in guaranteeing the trust of these components await us. For example, malicious alterations inserted into electronic designs can allow for backdoors into the system. Furthermore, new forms of attacks that exploit side-channel signals are being developed. Third, intellectual-property protection is becoming a major concern in the globalized, horizontal semiconductor business model. HOST 2013 is a forum for novel solutions to address these challenges. Innovative test mechanisms may reveal Trojans in a design before they are able to do harm. Implementation attacks may be thwarted using side-channel resistant design or fault-tolerant designs. New security-aware design tools can assist a designer in implementing critical and trusted functionality, quickly and efficiently. The IEEE International Symposium on Hardware Oriented Security and Trust seeks original contributions in the area of hardware-oriented security. This includes tools, design methods, architectures, circuits, and novel applications of secure hardware.