Locate Flaws and Vulnerabilities in Your System with Secunia PSI

Want to be sure that your system is free from flaws and vulnerabilities? Well, there's a free security software that scans your computer for installed software and determine if any applications lack security updates. This tool is Secunia Personal Software Inspector (PSI). What's good about this tool is that it not only provides an exhaustive list of possible threats to your system but also the links to the downloads needed to correct the security flaws.