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BlueDelta is a Russian state-sponsored threat actor described as GRU-affiliated. Reporting attributes to BlueDelta an ongoing espionage campaign (as of 2026-01-09) primarily targeting the energy sector/energy organizations, highlighting a focus on critical infrastructure. The actor has been reported conducting credential-harvesting activity and targeting Turkish and broader European organizations. Tactically, BlueDelta has been described as abusing free applications as part of its intrusion approach to facilitate compromise of targeted organizations.
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