A power cut in western Ukraine last month was caused by a type of hacking known as “spear-phishing”, says the US Department of Homeland Security (DHS).
The attack caused a blackout for 80,000 customers of western Ukraine’s Prykarpattyaoblenergo utility.
Experts have described the incident as the first known power outage caused by a cyber attack.
Ukraine’s state security service has attributed the attack to state-sponsored hackers from Russia.
DHS said the “BlackEnergy Malware” used in the attack appears to have infected Ukraine’s systems via a corrupted Microsoft Word attachment.
The same code was detected in 2014 within systems at US facilities but there was no known successful disruption to the US grid.
Read more: Hackers caused power cut in western Ukraine – US
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