Deadline Reports: Ten years after a crippling cyberattack on Sony Pictures, Disney said Monday that it’s investigating a reported hack of its internal Slack workplace messages by a group calling itself Nullbulge.

“Disney is investigating this matter,” a company spokesperson told Deadline of the hack, which was first reported in the Wall Street Journal and is said to include data from thousands of Slack channels at the media and entertainment giant.

The Nullbulge website, under a header ‘Disney Internal Slack,’ said it’s hacked “almost 10,000 channels, every message and file possible.”

“Unreleased projects, raw images and code, some logins, links to internal api/web pages, and more! Have fun sifting through it, there is a lot there,” the website said.

The WSJ said it couldn’t immediately verify the group’s claims of the scope of the documents involved and how they were obtained. The publication said material it viewed went back to 2019 and included conversations about maintaining Disney’s corporate website, assessments of candidates for employment, programs for emerging leaders within ESPN, and photos of employees’ dogs. Nullbulge has posted screenshots of the documents online.

The group told the WSJ that it targeted Disney “due to how it handles artist contracts, its approach to AI, and its … pretty blatant disregard for the consumer.”