HBO, 'Game of Thrones' Twitter Accounts Hacked

Several HBO-related Twitter accounts appear to have been hacked by an online security group.

Numerous accounts were affected in the attack, including accounts for Game of Thrones, Veep, Ballers and The Leftovers.

The hackers, identifying themselves as the cyber security group OurMine, left the same message across multiple platforms.

"Hi, OurَMiَne are here, we are just testing your security," the group wrote. "HBO team please contact us to upgrade the security - ourmine .org -> Contact"

It appears account holders deleted some of the initial messages, but they were tweeted out again moments later. This pattern continued, and then the hackers started to change up their message.

"Let's make #HBOHacked trending!" they wrote.

Other HBO-affiliated accounts affected include Last Week Tonight, Cinemax, HBO Go, HBO Boxing, Real Sports and HBO Documentaries. Many of the tweets sent from satellite accounts have remained up for at least 35 minutes.

HBO-related Facebook accounts were also hacked.

OurMine has made a reputation for themselves after several high-profile hacks. They've infiltrated Buzzfeed, Fortune and social media accounts belonging to internet entrepreneurs including Mark Zuckerburg, Jack Dorsey and Jimmy Wales.

These hacks are presumably not connected to the group that hacked an HBO executive's email account and leaked episodes of Game of Thrones, Ballers and more.

HBO has not commented of the leaks as of press time.