https://techcrunch.com/2022/03/23/microsoft-lapsus-hack-source-code/

Microsoft has confirmed that it was breached by the Lapsus$ hacking group.

In a blog post on Tuesday — published hours after Lapsus$ posted a torrent file containing partial source code from Bing, Bing Maps, and Cortana — Microsoft revealed that a single employee’s account was compromised by the hacking group, granting the attackers “limited access” to Microsoft’s systems and allowing the theft of the company’s source code.