A massive dump of Microsofts confidential Windows 10 internal builds and the source codes for private software has been leaked online. The data in the leaked dump were likely exfiltrated from Microsoft systems in March. The leaked code includes the source to the base Windows 10 hardware drivers and Microsoft PnP code, the USB and Wi-Fi stacks, storage drivers, and ARM-specific OneCore kernel code. The leak includes top-secret builds of Windows 10 and Windows Server 2016 havent been released to the public.”]
Source: http://securityaffairs.co/wordpress/60374/data-breach/windows-10-data-leak.html