Prof. Kostka delivered a widely acclaimed lecture on the topic of the "Social Credit System" on June 25, 2025, as part of an event for scholarship holders of the Hans Böckler Foundation. The focus was on recent developments, decentralization, and the various models implemented in different Chinese cities. In addition, Prof. Kostka shed light on the role of digital platforms in the implementation of Smart City concepts by local governments.

The event organized by the Hans Böckler Foundation offered the scholarship holders the opportunity to discuss the challenges and potential of digital governance tools with Prof. Kostka - a topic that is gaining increasing importance in Germany as digitalization and urbanization continue to advance.