Berserk Bear

Russian Federation


BERSERK BEAR is an adversary highly likely attributable to the Federal Security Service of the Russian Federation (also known as FSB, or Федеральная служба безопасности, abbreviated to ФСБ). This assessment is made with high confidence and is based on the adversary's demonstrated target profile, sensitive source reporting indicating geographic origin, operational overlaps with another FSB-attribut...

Community Identifiers



  • DkxCBrVFyiJtnUZ2QjhKwed


  • ZGrVKcI4ahvSsp2

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IOCs for this adversary


During a cybersecurity incident, indicators of compromise (IoC) are clues and evidence of a data breach.