The server contained almost 270 gigabytes of data collected from 200 police departments, law enforcement training and support resources and fusion centers. BlueLeaks was published in June by DDoSecrets, a self-proclaimed transparency collective that publishes covert data. According to reports, the data dates back to 1996 and was obtained in a data breach last month of Netsential, a supply chain company used by law enforcement and other government agencies across the U.S. Data included in the leak comes from various agencies, including the Missouri Information Analysis Center.
Source: https://threatpost.com/blueleaks-server-seized-by-german-police-report/157288/