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Disrupting SEABORGIUM’s ongoing phishing operations

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The Microsoft Threat Intelligence Center (MSTIC) has observed and taken actions to disrupt campaigns launched by SEABORGIUM, an actor Microsoft has tracked since 2017. SEABORGIUM is a threat actor that originates from Russia, with objectives and victimology that align closely with Russian state interests. Its campaigns involve persistent phishing and credential theft campaigns leading to intrusions and data theft. SEABORGIUM intrusions have also been linked to hack-and-leak campaigns, where stolen and leaked data is used to shape narratives in targeted countries.
Based on known indicators of compromise and actor tactics, SEABORGIUM overlaps with the threat groups tracked as Callisto Group (F-Secure), TA446 (Proofpoint) and COLDRIVER (Google). Security Service of Ukraine (SSU) has associated Callisto with Gamaredon Group (tracked by Microsoft as ACTINIUM); however, MSTIC has not observed technical intrusion links to support the association.
Since the beginning of 2022, Microsoft has observed SEABORGIUM campaigns targeting over 30 organizations, in addition to personal accounts of people of interest. SEABORGIUM primarily targets NATO countries, particularly the US and the UK, with occasional targeting of other countries in the Baltics, the Nordics, and Eastern Europe.
Disrupting SEABORGIUM’s ongoing phishing operations - Microsoft Security Blog
The Microsoft Threat Intelligence Center (MSTIC) has observed and taken actions to disrupt campaigns launched by SEABORGIUM in campaigns involve persistent phishing and credential theft campaigns leading to intrusions and data theft.

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