While Israel and the U.S. were bombing Iran’s nuclear sites, another battlefield emerged behind the scenes: the financial infrastructure that keeps Tehran connected to the world.

       Israeli authorities, and a pro-Israeli hacking group called Predatory Sparrow, targeted financial organizations that Iranians use to move money and sidestep the U.S.-led economic blockade, according to Israeli officials and other people familiar with the efforts. U.S. sanctions, imposed off-and-on for decades due to Tehran’s nuclear program and support for Islamist groups, have aimed to cut Iran off from the international financial system.

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