ComputerWorld: Apple's new OS X tightens screws on some malware

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Mountain Lion's default 'Gatekeeper' setting allows only approved Mac software to be installed

By Gregg Keizer
February 17, 2012

Apple will introduce a new Mac security model with OS X Mountain Lion this summer that by default lets users install only programs downloaded from the Mac App Store or those digitally signed by a registered developer.

Some experts called Gatekeeper -- Apple's name for the model and technology -- a game-changer while others criticized it as less than watertight.

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