Game Of Thrones star Nikolaj Coster-Waldau has said ratings will not be damaged by leaked episodes as well as spoilers released after the HBO hack.
The actor, who plays Jaime Lannister, also said he believes most true fans will stay away from compromised information.
So far, scripts have been released after a hacker breached HBO's computer network and, in a separate incident, an episode of the current season was published online before its air date.
Coster-Waldau said: "There were always going to be people who want to find out more but I think it's just a tiny fraction of the people who love the show.
"Why would you want to spoil it for yourself?
"Last week episode four was leaked and that didn't hurt the ratings at all."
Indian police reportedly arrested four former and current employees of Prime Focus Technology, a Mumbai-based company that stores the series for an Indian network, over the leak of episode four of the current season.
Separately, HBO has been under attack from a group of hackers who said they have stolen 1.5Tb of data and have been trickling out the stolen information over several weeks.
The leaks have included scripts, internal documents and emails from an executive so far and it is feared that more will follow.
HBO said it is not in contact with the group and conceded further "bits and pieces" of stolen information may follow to generate "media attention".