Dragos says the group behind the tools has a "breadth of knowledge" that's "beyond" any previously witnessed.

Russian losses near Kyiv and a looming onslaught in eastern Ukraine may be a factor in the attack, a Ukrainian official said.

One indictment refers to infamous hacking attempts on industrial control systems in 2017, and the other involves a separate spree from 2012-17.

The group allegedly has targeted the defense, local government, oil and natural gas and telecommunications sectors in places including North America.

European officials do not currently believe that some of the attacks are linked.

Global operations of Oiltanking were not affected.

The company says it's getting its systems back online.

"A couple folks have struggled with the idea that we're going to pat companies on the back for doing things they should already be doing," said one…

The administration expects to make "concrete announcements" about tackling root causes of cyberattacks, a senior official said.

The vulnerability could be used to deploy a variety of attacks including ransomware.