Guys' All the standard security measures on the iMac, e.g.; inbuilt security like Xprotect, Gate Keeper, firewall, browser security messures for example: Sandboxing I'm sure some folks like myself would be interested in learning how that works?
iMac, OS X El Capitan (10.11.4)
This may help http://www.apple.com/osx/what-is/security/
This may help http://www.apple.com/osx/what-is/security/
Sandboxing blocks malicious code.
The App Sandbox in OS X helps ensure that apps do only what they’re intended to do. App sandboxing isolates apps from the critical system components of your Mac, your data, and your other apps. Even if an app is compromised by malicious software, sandboxing automatically blocks it to keep your computer and your information safe. OS X delivers sandboxing protection in Safari by sandboxing the built-in PDF viewer and plug-ins such as Adobe Flash Player, Silverlight, QuickTime, and Oracle Java. And OS X sandboxes apps like Mail, Messages, FaceTime, Calendar, Contacts, Photos, Notes, Reminders, Photo Booth, Quick Look previews, Game Center, Dictionary, Font Book, and the Mac App Store.
Sandbox
