The U.S. Department of Homeland Security (DHS) and the Federal Bureau of Investigation (FBI) have identified a Trojan malware variant—referred to as KEYMARBLE—used by the North Korean government. The U.S. Government refers to malicious cyber activity by the North Korean government as HIDDEN COBRA. US-CERT encourages users and administrators to review Malware Analysis Report (MAR) MAR-10135536-17 and the US-CERT page on HIDDEN COBRA - North Korean Malicious Cyber Activity for more information. NCCIC/US-CERT.