Security News > 2022 > March > Lapsus$ hackers leak 37GB of Microsoft's alleged source code
Monday night, the hacking group posted a torrent for a 9 GB 7zip archive containing the source code of over 250 projects that they say belong to Microsoft.
When posting the torrent, Lapsus$ said it contained 90% of the source code for Bing and approximately 45% of the code for Bing Maps and Cortana.
Even though they say only some of the source code was leaked, BleepingComputer is told that the uncompressed archive contains approximately 37GB of source code allegedly belonging to Microsoft.
Security researchers who have pored over the leaked files told BleepingComputer that they appear to be legitimate internal source code from Microsoft.
The projects appear to be for web-based infrastructure, websites, or mobile apps, with no source code for Microsoft desktop software released, including Windows, Windows Server, and Microsoft Office.
When we contacted Microsoft about tonight's source code leak, they continued to tell BleepingComputer that they are aware of the claims and are investigating.
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