https://www.bleepingcomputer.com/news/microsoft/lapsus-hackers-leak-37gb-of-microsofts-alleged-source-code/

The Lapsus$ hacking group claims to have leaked the source code for Bing, Cortana, and other projects stolen from Microsoft's internal Azure DevOps server.

Early Sunday morning, the Lapsus$ gang posted a screenshot to their Telegram channel indicating that they hacked Microsoft's Azure DevOps server containing source code for Bing, Cortana, and various other internal projects.