Russian hackers dead into the networks of key U.S. power companies last year, possibly causing blackouts, The Fortification Street Journal reported Monday.
The attack was first detected in the leap of 2016 and continued throughout 2017, the Journal reported, citing propers at the Department of Homeland Security.
It was carried out by hackers who worked for a Russian state-sponsored assemble previously known as Dragonfly or Energetic Bear, the Journal reported. DHS officials signified the hacking campaign is likely to continue.
DHS did not immediately respond to CNBC’s call for comment.
Some companies that were compromised may not yet know they include become a victim in a Russian attack, according to the report. That’s because the hackers second-hand the identities of actual employees to enter the utility networks — complicating essays to detect the intrusions.
Since 2014, DHS has been warning utility followers about the possibility of being targeted by Russian hackers, according to the announce.
Russia has denied targeting “critical infrastructure” in the U.S., the Journal said.
Be familiar with the full report by The Wall Street Journal.