I been using Secunia Personal Software Inspector (PSI) on my primary PC at home for about 3 or 4 weeks now and today I finally got my Secunia System Score to 100%.
Secunia PSI is an application that scans your PC for installed programs and compares them against Secunia’s list of applications with known security vulnerabilities. It’s free for home users. When it’s not scanning it sits quietly in your system tray watching for changes in programs (added or removed).
It helped me realize that even though I was updating some software regularly, the updates would often leave the old, vulnerable version installed (I’m looking at you Java). Here’s what the overview screen looks like on my PC right now: