Game of Thrones script "stolen in HBO hack"

Speakers: Li Ningjing, Sam Duckett, and Lu Sirui

Poster of TV series Game of Thrones. [Photo: from Baidu.com]

A group of hackers claims to have stolen the script for a forthcoming Game of Thrones episode and other data in a breach at entertainment firm HBO.

The group says it has 1.5 terabytes of the company's data and has posted episodes of Ballers and Room 104 online.

It added that more material would be released "soon".

HBO confirmed it had experienced a "cyber-incident" in a statement.

In an email published by Entertainment Weekly, the hackers appeared to offer more details in exchange for favorable coverage.

Reports have said the allegedly stolen Game of Thrones script appears to be from the fourth episode of season seven, which is currently being broadcast.

The audio clip is from Studio+, produced by CRI.