The U.S. Treasury Department has granted itself sweeping new authority to sanction any person or company operating in Iran’s digital asset sector, a move that exposes foreign exchanges, brokers, payment processors and technology providers to potential blacklisting regardless of where they are based.

The Office of Foreign Assets Control issued five sectoral determinations on Monday under Executive Order 13902, covering digital assets, technology, gold, aviation and shipping. The action, part of a campaign Treasury Secretary Scott Bessent has branded “Operation Economic Outcast,” represents the most expansive U.S. sanctions framework targeting Iranian cryptocurrency activity to date.

“The Iranian regime increasingly turns to…