“…The already established tradition of an unsually vivid and interactive conference series has been confirmed with an important richness and variety of papers. The program included papers with a high technical expertise, such as ''Analysis and Evaluation of OpenFlow Message Usage for Security Applications'' by Sebastian Seeber [7], which describes mitigation and defense mechanisms that are currently used in SDN 3 environments, analyzes their dependencies with respect to OpenFlow messages, and quantifies their performances with different implementations. It also covered papers related to high level methodologies, such as ''In Whom Do We Trust-Sharing Security Events'' by Jessica Steinberger [8], which specifies a trust model for security events in order to deploy semi-automated remediations and facilitate the dissemination of security event information, using the exchange format FLEX 4 in the context of ISPs.…”