Tehran’s targeting campaigns against U.S. organizations ‘have recently escalated,’ a federal advisory warns.Iran has demonstrated an ability to penetrate networks tied to critical U.S. infrastructure before.WASHINGTON — U.S. intelligence agencies are “urgently warning” private sector companies throughout the nation that Iranian actors “are conducting exploitation activity” that has resulted in “disruptions across several U.S. critical infrastructure,” according to a government notice reviewed by The Times.The Iranian cyberactivity comes as President Trump is threatening to target Iran’s critical infrastructure in the coming hours, particularly its bridges and power plants.Iran’s attack targeted products by Rockwell Automation’s Allen-Bradley, one of the most widely...