HBO is reportedly gunning for Pornhub over a breach of copyright after sex scenes from its hit show Game of Thrones were uploaded to the site.
Pornhub, one of the world's largest pornography sites, hosts numerous clips of Thrones' sex and nude scenes, The Sun reports.
There are also reportedly clips of adult film stars acting as characters from the show.
A spokesman from HBO told The Sun they were aware of the issue and "in the process of getting material taken down".
The Sun also reports more than six million people searched Pornhub last month for Thrones-related content, and searches increased by nearly 400 per cent following the season six debut.
Emilia Clarke, who plays Daenerys Targaryen was the most searched, closely followed by Natalie Dormer (Margaery Tyrell) and Sibel Kekilli (Shae).