The US DHS and the FBI have issued a warning that APT groups are actively targeting energy firms and critical infrastructure. The warning was sent to the organization via email on Friday to inform them of Advanced Persistent Threat Activity targeting energy and other critical infrastructure sectors since at least May 2017. The campaign is still ongoing, the government experts believe it is operated by the Dragonfly hacking group (aka Energetic Bear) that has been active since 2011 when it targeted defense and aviation companies in the US and Canada.”]
Source: http://securityaffairs.co/wordpress/64625/hacking/dhs-energy-firms-attacks.html