Microsoft’s Tom Pilla has confirmed the leak stating: “Today we became aware that incomplete portions of Windows 2000 and NT 4.0 source code was illegally made available on the Internet”

According to Neowin, the source code for Microsoft Windows NT 4 and 2000 has been leaked. A number of universities and institutes already have legal access to the source code, distributed by Microsoft. It is still not confirmed by the software giant of Redmond – but in the wrong hands, this could result in a major security catastrophe and a huge threat against The 203MB file expands to just under 660MB, noting that the final code size almost perfectly matches the capacity of a typical CD-ROM. The entire source code is believed to be about 40GB, meaning that the file circulating Thursday is only a fraction of the full code base.

This just hasn’t been a good week for Microsoft.