I have a MacBook Pro OS 10.9 using Safari ver 7.0 with Norton Internet Security 5 for Mac. In Safari, at Preferences>Security>Internet Plug-ins>Manage Website Settings, it says about NortonInternetSecurityBF Version 1.7.0 “NortonInternetSecurityBF does not support the highest level of security for Safari plug-ins. Websites using this plug-in may be able to access your personal documents and data”. Should I be concerned about this ... by which I mean, as regards the plug-in NortonInternetSecurityBF, should I select the setting "Ask" or "Allow Always" at "When visiting other websites"? Thank you.