Is Open Source Software More Secure?

A couple of recent events have brought the debate of open source vs. closed source code to the forefront of security debates. On the one hand, you have the recent Windows source code leak. On the other hand you have a series of flaws discovered in the Linux kernel over the past few months. Many fear what may come from the Windows source code leak once the bad guys get done picking it apart and finding the holes. The argument is that if the code had been open source any such vulnerabilities would have long since been discovered and patched. But then, Linux is open source and there are still flaws discovered in that OS as well. Larry Seltzer has written an article on eWeek.com taking a closer look at the question: Is Open-Source Code Really Examined for Security Any More Than Closed-Source Software?.