As quoted from quietman7's Answers to common security questions - Best Practices:
Always update vulnerable software like browsers, Adobe Reader and Java Runtime Environment (JRE) with the latest security patches. Older versions of these and several other popular programs have vulnerabilities that malicious sites can use to exploit and infect your system.
To help prevent this, install and use Secunia Personal Software Inspector (PSI), a FREE security tool designed to detect vulnerable and out-dated programs/plug-ins which expose your computer to malware infection.
By the way Secunia PSI (Personal Safety Inspector) will become End of Life on April 20th 2018 and will need to be uninstalled.
This product is reaching End-of-life on April 20, 2018, and therefore, no longer available. On April 20, 2018, existing installations of PSI will no longer function and should be uninstalled.
Now that Secunia PSI becomes End-of-life, is Kaspersky Software Updater as good?
I know I am asking somewhat early, but I would rather avoid not having a reliable Software Updater Program.
Thank you very much in advance!