United States Department of the Treasury
24 people and 14 groups were targeted.
The attack pilfered more than 31 terabytes of academic data and intellectual property.
The new sanctions are the most significant the U.S. has taken against Russia since Trump took office.
The move marks the first time the United States has publicly accused Moscow of hacking into American energy infrastructure.
WHAT'S HAPPENING
โThe administration is confronting and countering malign Russian cyber activity," Treasury Secretary Steve Mnuchin said.
"The United States will continue targeting persons, wherever located, who facilitate North Koreaโs illicit shipping practices.โ