Berserk Bear

Berserk Bear (also known as BROMINE, Crouching Yeti, Dragonfly, Dragonfly 2.0, DYMALLOY, Energetic Bear, Ghost Blizzard, Havex, IRON LIBERTY, Koala, or TeamSpy) is a Russian cyber espionage group, sometimes known as an advanced persistent threat. According to the United States, the group is composed of "FSB hackers," either those directly employed by the FSB or Russian civilian, criminal hackers coerced into contracting as FSB hackers while still freelancing or moonlighting as criminal hackers. Four accused Berserk Bear participants, three FSB staff and one civilian, have been indicted in the United States and are regarded by the United States Department of Justice as fugitives.