The U.S. Treasury Department announced new sanctions against Iran’s regime on Tuesday. These sanctions target four individuals and two companies accused of cyberattacks against American businesses and government agencies.

The Treasury Department claims these actors acted on behalf of Iran’s Islamic Revolutionary Guard Corps Cyber Electronic Command (IRGC-CEC). The attacks reportedly included spear phishing and malware deployment.

“Iran continues to launch cyberattacks against the U.S. to disrupt our infrastructure and harm our citizens,” stated Brian Nelson, Under Secretary for Terrorism and Financial Intelligence at the Treasury. “The U.S. will continue to expose and disrupt these operations using all available resources.”

These latest sanctions come amidst ongoing tensions between the U.S. and Iran. The U.S. has previously sanctioned Iran for supporting militant groups in the Middle East and aiding Russia’s war in Ukraine.

This follows recent sanctions targeting Iran’s drone program in response to an attack on Israel. That attack was a retaliation for an airstrike on the Iranian consulate in Damascus, believed to be by Israel.

In addition to the sanctions, the U.S. Department of Justice and FBI have indicted the four individuals for their alleged cyber activities against the U.S.