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BlueDelta Hackers Target Ukrainian Webmail Users in Credential-Harvesting Campaign

First seen 19 Dec 2025, 21:58 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

BlueDelta, a Russian state-sponsored hacker group, is conducting a credential-harvesting campaign targeting users of UKR.NET, a widely used Ukrainian webmail and news service. The group, also known as APT28 and Fancy Bear, has been active for over a decade, focusing on stealing login credentials from government and private sector users.

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