Open source software is software that makes the sourcecode available for anyone to copy and use. For most of us, having access to the source code of a program does us little good, as we are not programmers and won’t be able to do much with it. The good news is that opensource software is also available in a compiled format that we can simply download and install. The opensource movement has led to the development of some of the most used software in the world, including the Firefox browser, the Linux operating system, and the Apache web server. Many also think opensource software is superior to closed source software. Because the source code is freely available, many programmers have contributed to opensource software projects, adding features and fixing bugs. Many businesses are wary of opensource software precisely because the code is available for anyone to see. They feel that this increases the risk of an attack. Others counter that this openness actually decreases the risk because the code is exposed to thousands of programmers who can incorporate code changes to quickly patch vulnerabilities