The U.S. Attorney's Office for the Southern District of New York is set to announce charges against an Iranian national in last summer’s HBO hack. According to a statement from the office, Behzad Mesri allegedly hacked into HBO’s computer servers, stealing proprietary data, including information about then-unreleased episodes of Game of Thrones, and then allegedly sought to extort the premium cabler. NBC 6 Miami, which received details of the indictment, says Mesri went…