Meta Says Hackers Stole Code and Personal Data of 1,500 Mostly US Employees via Compromised GitHub Repos

Meta disclosed that attackers used stolen employee credentials to access some of its GitHub repositories, exposing roughly 1,500 people — predominantly US-based employees. Meta says 99% of the stolen content was software code and 1% personal data, which had been improperly stored in the repos against policy, and that a significant portion of the apparent personal records was synthetic or anonymized test data. The company has rotated credentials, added monitoring, and is offering affected individuals credit and dark-web monitoring.