https://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2002-38,GGLG:en&q=security+forum
Hope that helps, most of them are about security as far as the internet goes.
here's a few more:
https://www.google.com/search?sourceid=navclient&ie=UTF-8&rls=GGLG,GGLG:2002-38,GGLG:en&q=security+entry%2C+forum
good luck.