Mac OS X doesn't offer much flexibility when it comes to protecting your data. You can use the Security preferences panel to turn on FileVault and encrypt your entire user folder. You can use Apple's Disk Utility to store particular files in an encrypted disk image. But if you're looking for the easiest way to encrypt a few folders, or password protect folders so others cannot view files when you step away, Tao Effect's $30 Espionage ( Macworld rated 3.5 out of 5 mice ) may be the answer. This utility lets you encrypt specific folders on your Mac or just password protect them from prying eyes. It integrates into the Finder and stays out of your way. It also makes it easy to protect e-mail messages, chat transcripts, and sensitive application support data. Espionage is a great way to protect business documents and financial records.
Whether you're building a small business or working as a lone freelancer, file backup, synchronization, and collaboration are essential. For more than two million people (and counting), Dropbox has quickly become the go-to solution, as this online service's file synchronization and collaboration features work across the Mac, Windows, iPhone, iPad, Android, and even Linux. Download the Dropbox software and sign up for the service. The software creates a folder in your user folder that looks like any other, except anything you save here gets uploaded quickly and securely to your Dropbox account in the cloud. Save changes to a document, and they are again uploaded quickly while you continue working. Like OS X's Time Machine, Dropbox stores a month's worth of file revisions, but you can access them online and retrieve a previous version even if you're away from your computer. You can share folders to collaborate with other users, and Dropbox offers 2GB of space for free to help you get your feet wet. Upgrade to a Pro 50 account for 50GB of storage at $10 per month, or to a Pro 100 account for 100GB of storage at $20 per month.