On June 24, the Research Association for Science, Disarmament and International Security (FONAS) and the Institute for Peace Research and Security Policy at the University of Hamburg (IFSH) organized a national workshop on “Arms Race in Cyberspace?” About 40 scientists, government officials and practitioners dealt with questions such as ‘what is cyberwar?’ and ‘which limitating measures are available?’. The experts analyzed the current situation regarding possible threats and alternatives of response from a German perspective. Talks were held by five speakers, amongst others from the MFA and MoD. The event was part of the IFSH research project „Perspectives on Cyber War: Legal Frameworks and Transparency and Confidence Building“, which will also involve an international workshop towards the end of this year in cooperation with UNIDIR, discussing confidence building measures.