Unidentified hackers claimed to have targeted Dozor, a satellite telecommunications provider that services power lines, oil fields, Russian military units and the Federal Security Service (FSB), among others, according to a message posted to Telegram late Wednesday night.

“The DoZor satellite provider (Amtel group of companies), which serves power lines, oil fields, military units of the Russian Defense Ministry, the Federal Security Service, the pension fund and many other projects, including the northern merchant fleet and the Bilibino nuclear power plant, went to rest,” the group’s first message read, according to a translation. “Part of the satellite terminals failed, the switches rebooted, the information on the servers was destroyed.”