The Security Research Unit at TSSG investigates topics in IT security including distributed trust and reputation management, access control for secure services, identity and privacy technologies, protection of critical infrastructures, and international coordination of research and policy related to trust and security. Sample projects described include Aniketos which aims to establish and maintain trustworthiness in dynamic service environments, PASSIVE which proposes an improved security model for virtualized eGovernment applications, and ENDORSE which provides open source tools to ensure data protection compliance. TSSG also partners with universities and companies and is involved with the European Commission to coordinate research in these areas.