The German Aerospace Center confirmed that its computer network was breached in a months-long malware attack earlier this week.
The malware affected every computer system and left little for investigators to work from because it was designed to self-destruct, according to Der Speigel. The Aerospace Center maintains data on multiple critical German entities, including the country's defense efforts, security and space missions.
Although German investigators aren't sure of the attackers' location, preliminary information points to China. They noted that some of the malware's code contained Chinese characters and typos that are often attributed to Asian programmers.
However, the German magazine wrote that those characteristics could be a disguise to cloak a Western intelligence agency, such as the National Security Agency (NSA).