The cast of Game of Thrones is coping with another fallout of HBO’s recent security breach, according to various reports.

The Verge and The Guardian report that, along with additional leaked scripts for upcoming episodes of Game of Thrones and Ballers, hackers have posted the “personal phone numbers, home addresses and email addresses” of the Game of Thrones cast online. The Guardian adds that the hackers have stolen 3.4 GB of data, demanding a ransom from HBO to prevent additional leaks. The group has not confirmed whether future leaks include unaired Game of Thrones episodes.

A recent video sent to HBO made it clear that extortion was the reason behind the breach, according to Wired.

“HBO spends 12 million for Market Research and 5 million for [Game of Thrones season seven] advertisements,” the video said, Wired reports. “So consider us another budget for your advertisements!”

An HBO representative told Wired that there was no reason to believe the hackers had access to the company’s email database. The network confirmed that there it launched an ongoing investigation both internally and externally, but the message is clear: This isn’t as bad as the 2014 attack on Sony Pictures yet. Three years ago, a group of hackers leaked thousands of Sony emails, which led to multiple people leaving the company, including top executive Amy Pascal.

Polygon has reached out to HBO for comment on the investigation and will update when more information is made available.

Update: HBO sent this response to Polygon when asked about the most recent attack.