Several HBO Twitter accounts were hacked, including the 'Game of Thrones' account

Winter has come to Westeros, and also to HBO.

"Game of Thrones" leaks, "Curb Your Enthusiasm" leaks, and more have given the cable network a hard time over the past few weeks, some thanks to a hacker known as "Little.finger66."

The hacker (or hackers) allegedly have access to internal documents, scripts, and emails, and have demanded millions in bitcoin from HBO to prevent more releases.

But now the prolific hackers OurMine are also giving HBO a hard time.

On Wednesday night, a series of suspicious tweets from OurMine hackers were tweeted from HBO's official Twitter account, the "Game of Thrones" official Twitter account, and the "Girls" official Twitter account. HBO managed to delete the tweets in a timely fashion, and presumably regain control of Twitter, but below are screencaps of some of the tweets:

In the past, OurMine has taken over official Twitter accounts of Mark Zuckerberg and Channing Tatum, and has hacked into the websites of TechCrunch and BuzzFeed. These hacks appear to be unrelated to the Little.finger66 hack.

HBO told NBC News it was investigating the incident.