from the PC World article
"If the source code for Windows 2000 and Windows NT has indeed been leaked, the ramifications would be far-reaching. A breach of the code could expose users to an increase in cyberattacks because it would make it easier for hackers to find holes in the operating systems that they can exploit. It would also mean that Microsoft's closely guarded intellectual property is now out in the open, says Joe Wilcox, a Washington, D.C.-based Jupiter Research senior analyst.".
/me grabs the latest linux kernel from kernel.org