Threatline

Russian ELECTRUM Tied to December 2025 Cyber Attack on Polish Power Grid

The "coordinated" cyber attack targeting multiple sites across the Polish power grid has been attributed with medium confidence to a Russian state-sponsored hacking crew known as ELECTRUM. Operational technology (OT) cybersecurity company Dragos, in a new intelligence brief published Tuesday, described the late December 2025 activity as the first major cyber attack targeting distributed energy