Fundamental flaw in Norton Safety Minder for MAC OS X Running Snow Leopard 10.6

My ten year old son has just shown me two simple ways to bypass Norton Safety Minder in Snow Leopard 10.6...

 

1) If you right-click on a web page and download it to your desktop, double click the downloaded web page then click allow when prompted....  hey presto unrestricted access to the internet! Very Worrying!

 

2) Use Google Chrome, Norton Saftey minder doesnt work at all...

 

Please could someone at Norton advise of how best to close down these fundamental flaws in this software!