Protecting the privacy of citizens is increasingly becoming a core challenge of the on-going dynamic evolution of the information society. With more than 60% of the population surfing the Internet and nearly all of their data being processed online in governmental and enterprise processes, the risk of discriminatory profiling, surveillance, ID-theft, and fraud, amongst others, become omnipresent.The European commission has given this a high priority and has spent significant funds on research in this field, such as the DISCREET-Project, the OPEN-TC-Project, and the PRIME-Project in FP6, as well as its follow-up PrimeLife in FP7. The commission has also been promoting the use of Privacy-Enhancing Technologies, recommending action in a variety of areas (cf. Communication from the Commission to the European Parliament and the Council on Promoting Data Protection by Privacy Enhanced Technologies (PETs), COM(2007)228).The European Privacy Open Space (PrivacyOS) brings together industry, SMEs, Government, Academia, and Civil Society to foster development and deployment of privacy infrastructures for Europe. It follows the Open Space Methodology, offering a flexible structure to tackle the emerging and dynamic issues of data protection in the information age. Through a series of (non-)conferences starting in April 2008 participants will exchange research and best practises, as well as developing strategies and joint projects following four core policy goals: Awareness-raising, enabling privacy on the Web, fostering privacy-friendly Identity Management, and stipulating research.Workshops will be held on Location Based Services, Electronic ID-Cards, eParticipation, Privacy Seals, and cryptographic mechanisms to name a few. New areas of work can be raised during the lifetime of the project. Outreach and consensus building will be ensured through co-locations with other conferences in related areas.