Mac user since early-2003. First computer, late-2002 flat screen iMac. I am using a mid-2012 MacBook Pro, Mountain Lion 10.8.4. I am the Admin account.
I was reading an article about Malware. I was quite sure I already had my Firewall on, but I decided to look. I can't access the Firewall tab: It is clickable, but nothing happens. It "depresses" and that's it.
How should I fix this?