An elite group of North Korean hackers secretly breached computer networks at a major Russian missile developer for at least five months last year, according to technical evidence and analysis by security researchers.
Cyberespionage teams linked to the North Korean government, which security researchers call ScarCruft and Lazarus, secretly installed stealthy digital backdoors into systems at NPO Mashinostroyeniya, a rocket design bureau based in Reutov, a small town on the outskirts of Moscow.
It could not be determined whether any data was taken during the intrusion or what information may have been viewed. In the months following the digital break-in Pyongyang announced several developments in its banned ballistic missile program, but it is not clear if this was related to the breach.
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