Here’s what I’ve done to harden my Macs and make them more difficult to hack into, and more difficult to gain access to valuable files. Frankly, the steps are easy, inexpensive, and avoid having to worry about malware software which often clogs your Mac’s performance.
One, Two, Three Steps
First up, I turn on the Mac’s built-in firewall. It’s in System Preferences > Security & Privacy, behind the Firewall button. Turn it on.
Second, right next to the Firewall button is the FileVault button which will encrypt contents on your Mac.
Finally, beyond multiple backups, I use a Mac app to restrict access to files, folders, and apps.
Your Mac is difficult enough to hack into, so why make it easy for a third party to find and use important or valuable files?
Mac users can select from a number of apps which lock up files, folders, and apps so only you can open them. One I like is called MacPermitWizard which doesn’t encrypt, but controls access by use of permissions.
It’s a bit geeky, but MacPermitWizard makes it easy to control permissions for files and folders (and applications).
Mac OS X is built on a Unix foundation with options for User and Global permissions on files, folders, and apps.
Simply select the files, folders, or apps you want to lock down, and MacPermitWizard controls and manages the permissions for each.
The companion app MacFileSafeguard works similarly, but does not adjust permissions on Mac apps; just files and folders.
There’s not much magic or expense to employing either app to help lockdown your Mac. I object to the use of the word Wizard in the first app. That smacks of the Windows world (where, indeed, magic may be needed to secure a PC).