Mr Mesri, a member of the Iran-supported Turk Black Hat Security team, conducted "hundreds of website defacements" in the United States and across the world, prosecutors said.
Considering Mersei now isn't in the United States, it may take some time for him to be caught by the USA government, but hopefully this sends a clear message to those looking to hack into HBO and leak the final season of Game of Thrones - which will be airing sometime in 2018 or 2019. He had allegedly hacked several HBO staffers who had remote access to its servers. At one point, prosecutors said, Mr Mesri bragged he had stolen 1.5 terabytes of data. "Beware of heart attacks". Often, the emails included images of Game of Thrones characters like the Night King, with accompanying messages like "Good luck to HBO". He also added a new threat: If HBO didn't pay up, he would destroy data on the company's networks.
"In the simplest of terms, he lurked in the alleyways of the Internet, identified the vulnerabilities of his victim, and pickpocketed their information from thousands of miles away", FBI Assistant Director William Sweeney said in a statement.
NBC 6 Miami, which received details of the indictment, says Mesri went by the alias Skote Vahshat, and has worked on behalf of his country's military to "conduct computer network attacks" that targeted military systems, nuclear software systems and Israeli infrastructure'.
HBO spokesman Jeff Cusson declined to comment on the developments. If we follow this metaphor out, then, Kim seems to be claiming that the U.S. Attorney's Office threatens to wipe out all civilization in the pursuit of an global criminal.
From May to August, executive emails and the personal phone numbers, email addresses and home addresses of Game of Thrones Season 7 cast members, among them Emilia Clarke (Daenerys), Lena Headey (Cersei), Peter Dinklage (Tyrion) and Kit Harington (Jon Snow), were leaked online, in addition to multiple episodes of HBO shows.
Mr Kim described Mr Mesri as an "experienced and sophisticated hacker who has been wreaking havoc on computer systems around the world for some time".