Of course, there is more than one of keeping your browsing secure. This email from work illustrates one of the methods, though it is not well favored:
Many of you have experienced problems with Microsoft Internet Explorer crashing under certain circumstances, especially when attempting to access … web sites. This note is just to let everyone know that this issue is one of two top priority items that the support team are working to resolve. The problem is the result of a critical security patch published by Microsoft recently and we are working closely with Microsoft to find a permanent solution. We expect to have better news tomorrow.
You can’t get infected if you can’t visit a site….