Hackers used malware to confuse utility in Ukraine outage - report

(Reuters) - Hackers likely caused a Dec. 23 electricity outage in Ukraine by remotely switching breakers to cut power, after installing malware to prevent technicians from detecting the attack, according to a report analysing how the incident unfolded.

The report from Washington-based SANS ICS was released late on Saturday, providing the first detailed analysis of what caused a six-hour outage for some 80,000 customers of Western Ukraine's Prykarpattyaoblenergo utility.