The City of Oranienburg detected a cybersecurity incident involving firewall systems used within its administrative network after receiving an alert from CERT Brandenburg regarding a large-scale cyberattack affecting approximately 75,000 firewalls of the same type. As a precautionary measure, the city temporarily shut down its administrative network, restricted access to municipal services, and implemented security measures to prevent potential compromise. While authorities stated that the administrative network was not directly affected by the attack, city offices and public services experienced temporary disruptions.