Berlin Mayor Kai Wegner stated that the city will not compromise with hackers after they breached city systems and stole data. According to Der Spiegel, the hackers demanded a 30 Bitcoin ransom. The Rhysida group, allegedly from Russia and Eastern Europe, has claimed responsibility for the attack and stated that they will begin auctioning the stolen 5.79TB of data within seven days. The attack forced the shutdown of some of Berlin's online systems and may affect personal data.