Well there's some anti-firewall articles out there as well. When I bought my first computer I installed Zone Alarm, it keeps alerting me about prevented severe attacks each day. Then I refer to some experienced guys around and stop using it now where did those every day severe attacks go? It's not luck, there's two way your computer being attacked 1. Via web (especially if you use IE) 2. exe,msi,bat etc. Use Opera without java, use adblocker like ad muncher to prevent popups, never open suspected exe files before upload to virustotal, that's all.