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Security researchers at Sekoia.io have uncovered a sophisticated cyberattack campaign orchestrated by APT28, the notorious Russian state-sponsored threat actor, targeting Ukrainian military personnel with weaponized Office documents that deliver advanc…
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Sekoia.io’s Threat Detection and Response (TDR) team has uncovered a sophisticated campaign by APT28 that weaponizes Signal Messenger to deploy two previously undocumented malware families—BeardShell and the Covenant framework. In early 2025, a trusted…
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