HBO has regained control of its social media accounts after the latest security breach to hit the entertainment company.
The hacking group OurMine took over several of HBO's Twitter accounts on Wednesday night, including ones for Game Of Thrones and John Oliver's show.
The group posted that "we are just testing your security" and asked HBO to contact it for an upgrade.
HBO said yesterday that "the infringement on our social media accounts was recognised and rectified quickly".
It comes after an episode of the hit fantasy show starring Emilia Clarke was leaked online days before it is scheduled to be broadcast.