Core Contents Media confirmed that their homepage was indeed hacked on the 15th.

While trying to navigate through the site earlier today, fans noticed random video clips being presented on the site. One of these video clips was one that netizens used as 'evidence' back in 2010 about T-ara's Jiyeon's alleged strip video chat. However, the agency responded back then that the individual in the video is definitely not Jiyeon, and rather someone who just looks similar to the idol.

Another clip was of the Japanese anime "Shingeki no Kyojin" ("Attack on Titan"), and there was also one about environmental protection spotted on the site as well.

Core Contents Media, home to T-ara, SPEED, Davichi, and more, revealed, "We haven't yet confirmed who is responsible for the hacking. We are planning to switch our security company. We have filed for an investigation for disruption of business and defamation. The homepage has been restored but we are currently blocking the connection for now."

Although it's not clear who is behind the hack, it is speculated that it might be anti-fans' doing.

Source: TV Daily via Nate, Chosun Ilbo via Nate