We've been talking about the potential of hacker strikes on electric grids for years, and now it looks like the threat is imminent. Symantec reports that a group it calls Dragonfly is targeting energy and power sectors in the US and Europe, with the intention of both learning how these facilities operate as well as eventually gaining control over the systems. This isn't the first time we've heard of Dragonfly. Back in 2014, Symantec and other researchers identified the group as responsible for a series of attacks on US and European energy systems that stretched from 2010 to 2014. A joint analysis between the Department of Homeland Security and the FBI in 2016 tied Dragonfly to Russian malicious activity, though Symantec has been careful not to speculate on the origins of the group.