Insecurity in Open Source

Debates over what methods result in the best software often pit those who favor an open-source approach against proponents of proprietary, or closed-source, development. Conventional wisdom holds that open-source software should have fewer security flaws than proprietary software. With more eyes able to look at the underlying source code, bugs should be found and squashed much faster.

http://www.businessweek.com/technology/content/oct2006/tc20061006_394140.htm