Windows is an operating system developed by Microsoft that has become the most popular operating system used by personal computers. Windows has been released in many version such as 3.11, 95, 98, 2000 and XP. Sometimes lamented for being bloated and oversized Windows has still continued to be the most popular OS around, mainly for being easy to understand and install for first time users. Multiple security issues also been a major problem with the launch of every new version of Windows. With XP Microsoft bundled a firewall to deal with these issues, but even the security of this program has been questioned.