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 resources (DERs). "The attack affected communication and control systems at combined heat and power (C
