I’m not sure how many times we are going to have to have this conversation before majority of people get the point. Using older firewall versions is not safe. No matter the brand name of software. Security software companies update these products for more than just marketing purposes. Many updates are done to resolve known security issues or usability problems. Yes many times new features are released with newer builds. However when looking at product history many times you will find that security updates have been done as well.
Kaspersky Antivirus & Internet Security Protection Software
ZoneAlarm Antivirus Software Virus Malware Protection & Firewall
ZoneAlarm older builds the debate that refuses to die
Are you secure with older versions of ZoneAlarm
Is it good security to run older ZoneAlarm versions
Do you need a software firewall or is a router enough
Can your software firewall be easily disabled – a reality check