“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.”
Source : Lapsus$ hackers leak 37GB of Microsoft’s alleged source code