The Security Mentor

That's when the Microsoft security patches come out, and Microsoft has announced that they've found and fixed critically important issues. "Critical" is Microsoft's word, not mine.

You need to install these right away. Here's why. As soon as the fixes are out, the bad guys will start looking at them to see what Microsoft changed. Then they have a good chance of finding out exactly what the problem was. Then they can write attacks that work against machines that don't have the fix yet.