A cybersecurity company is warning that Russian hackers are targeting U.S. energy companies.

Symantec revealed the ongoing cyber-espionage campaign in a blog post on its site yesterday, referring to the group of hackers as "Dragonfly."

The company has found evidence of viruses and other malware in the systems of energy grids, electric firms, and petroleum pipeline operators in America and six Western European countries.

The goal of the software appears to be stealing information, but could also be used for sabotage in the future.