Secunia (PSI) Personal Software Inspector
The Secunia PSI is a FREE security tool designed to detectvulnerable andout-dated programs and plug-ins which expose your PC to attacks.
The only solution to block these kind of attacks is to apply security updates, commonly referred to as patches. Patches are offered free-of-charge by most software vendors, however, finding all these patches is a tedious and time consuming task. Secunia PSI automates this and alerts you when your programs and plug-ins require updating to stay secure.