Pakistani authorities acting on intelligence arrested a man Tuesday accused of running an online counterfeit postage operation that U.S. prosecutors say caused more than $126 million in losses to the U.S. Postal Service, Pakistan’s cybercrime investigation agency said. Faheem Akram, 33, was arrested after a weekslong search involving raids across several parts of the country, a senior official at the National Cyber Crime Investigation Agency, Atif Ameer, told reporters. Akram, a resident of Khanewal in eastern Punjab province, was indicted by a federal grand jury in the Southern District of Florida, the U.S. Attorney’s Office for the district said in...