Walt Disney Co (DIS  ) has suffered a significant data breach.

What Happened: An anonymous hacking group known as Nullbulge leaked sensitive internal data from the Burbank, California-based company's Slack channels.

The Wall Street Journal reported the leaks, which include discussions about ad campaigns, studio technology, and candidate interviews.

Nullbulge claimed responsibility for the breach to WSJ, stating they accessed thousands of Slack channels.

The group published computer code, details about unreleased projects, and conversations about maintaining Disney's corporate website.

The data reportedly spans back to 2019. Disney is currently investigating the breach.

Why It Matters: In recent weeks, Nullbulge shared screenshots of documents, claiming they obtained project descriptions, plans, and financial data from Disneyland Paris.

The group targets companies based on social, economic, or political values, citing Disney's handling of artist contracts and AI approaches as reasons for the breach.

The hackers reportedly compromised a Disney software development manager's computer twice, gaining access to internal systems. The group's actions recall the 2014 Sony Pictures hack, which caused significant disruption and led to the resignation of Sony's co-chairman, Amy Pascal.

AT&T Inc (T  ) fell prey to a data breach after culprits compromised Snowflake Inc (SNOW  ). During the data thefts, hackers stole records from the cloud Snowflake, enabling them to steal the phone records of AT&T customers.

Advanced Micro Devices, Inc (AMD  ) also confirmed a cyberattack that did not affect critical data or operations.

Price Actions: DIS shares are trading higher by 0.01% at $96.88 premarket at the last check Tuesday.