UNITED NEWS INTERNATIONAL (UNI) — The Trump administration has slapped new sanctions on Russian firms and individuals for aiding the Kremlin to conduct cyberattacks against the U.S. and its allies.

On June 11, the U.S. Treasury Department announced sanctions against five Russian companies and technology firms as well as three Russian nationals.

The agency’s head Steven Mnuchin said that these Russian entities and individuals helped the Federal Security Service improve its cyber and underwater operations “and therefore jeopardize the safety and security of the United States and our allies.”

Mnuchin added that the U.S. is committed to “aggressively targeting” anyone aiding the FSB through the 2017 sanctions law, known as the Countering America’s Adversaries Through Sanctions Act.

The sanctioned targets are banned from the U.S. financial system and American citizens and business are prohibited from any transactions with them.