Russian hackers accused of attack on Poland electricity grid

Security researchers at ESET have attributed the December attacks to Russian APT Sandworm.

On Dec. 29 and 30, the Polish electricity grid was subjected to a cyberattack that nearly knocked out power to hundreds of thousands of households.

Security firm ESET has since conducted a closer examination of the attack and concluded that it was carried out by Sandworm, a group of hackers with strong ties to the Russian military intelligence service GRU.

The attack used Dynowiper, a powerful malware that deletes all data on vulnerable computers.