"HBO was one of our hard targets to deal with but we succeeded (it took about 6 months)", (sic).
However, the hackers have not made public how much they want.
The hackers also claim to have scripts, unaired copies of HBO movies and shows, and damaging information.
The HBO hack just keeps getting worse and worse.
The hackers asked for "our six-month salary in bitcoin", claiming they make anywhere from $12 million to $15 million a year from similarly blackmailing organizations they hack.
A total of 1.5 terabytes of digital content was stolen by the hackers from HBO servers of which they've leaked about half terabytes. Additionally, they would only deal directly with HBO CEO Richard Plepler and only send one letter detailing how to pay.
The Verge reported that draft scripts from five "Game of Thrones" episodes, including one scheduled to air this Sunday, were released in the latest data dump. "So consider us another budget for your advertisements!"
HBO said it is continuing to investigate and is working with police and cybersecurity experts. Back then they had threatened to release more data from the upcoming episodes which they have now proved that they weren't joking about.
Last week HBO executives and fans of the channel's numerous televisions shows were greeted with the news that hackers had managed to breach the network's servers.
Hackers have leaked personal information about the Game Of Thrones cast, including several stars' phone numbers and email addresses, according to reports.
Meanwhile, the first trailer has been released for the next episode of Game of Thrones, and it looks set to ramp up the drama of the last episode even further.