New DynoWiper Malware Used in Attempted Sandworm Attack on Polish Power Sector

Russian state-sponsored hacking group Sandworm attempted a major cyberattack on Poland's power infrastructure in late December 2025 using a new wiper malware called DynoWiper. The attack targeted two combined heat and power plants and renewable energy management systems but was unsuccessful. ESET linked the attack to Sandworm Show more