virtual dos

A change made to Windows in 1993 may have opened up a security hole that, surprisingly, remains unpatched today. The issue is unlikely to affect home users but could pose a risk to corporate networks. The problem stems from Windows NT version 3.1, ... which was one of the first 32-bit operating systems. As with the recent development of 64-bit operating systems, this meant some compatibility problems with older software. At the time, Microsoft added a feature known as a Virtual DOS (Disk Operating System) machine to run 16-bit applications on the system. The feature has been a fixture ever since ... (view more)