MacAnalysis is an extraordinary internet utility, but it has two major 'undocumented features'. You can't save anything, like settings, permitted IP addresses or firewall keywords to keep hackers from accessing your files, and have reenter all settings with each startup. The documentation is weak to non-existent. But if you have ever had your Mac hacked into, or would rather forego that experience, MacAnalysis is a must have utility. And there is nothing like catching in real time a hacker, trojan, worm or thousands of other malicious exploits, and then being able to counterattack in real time. Score one for the good guys! It is constantly updated virtually everyday.