The Windows XP source code was allegedly leaked online

[nulli]

Originally Posted by atom0s

Not sure why you guys think nothing in XP is still being used in 10. There is no reason for Microsoft to rewrite everything from scratch every edition or even for a major edition such as 10 outside of the main core and specific libraries that directly require it. I wouldn't be surprised if we see a lot of news popping up in the near future regarding various new 0days, patches from Microsoft to fix known problems that are now going to be mainstream that were ignored for the time being, etc. with this being a public thing now.

This will surely help exploit developers (I am not one) but we already have Windows 2000+WRK sources. And the leap from 2000/WRK to XP/2003 is not really that huge. If this was Windows 7 that would be something else entirely.

Legacy code will and always has been part of Windows. You will find NT, 2K, XP code in Windows 10 as well and this will have an impact of things for sure. Its just not that huge in my opinion.