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7/12/2012
02:10 PM
Max Cherney
Max Cherney
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How To Prevent Malware on Lion & Snow Leopard Macs

The myth that Macs are immune to viruses was put to rest once and for all by Flashback, a malware program that infected hundreds of thousands of Macs. As a result of that attack, Apple was forced to respond with a removal tool. Don't wait for the next big Mac breach--there are five simple things you can do now to keep your Mac safe from infection. Here they are.
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Lock down your Mac: Step 2

Next, go to the Firewall tab and turn the Firewall on. Depending on what software you're running in the background, you'll likely get immediate prompts to allow or deny incoming connections. I recommend denying all of them, finding out what's not working, and then opening only the necessary ports.

FireVault, another option, encrypts files. It adds a layer of protection, especially for mobile users, but in my experience it doesn't play well with Dropbox.

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