Hey there! Welcome to Espionage, the first application of its kind to bring folder encryption to the Mac.
Before Espionage came onto the scene, it was very difficult to securely protect individual folders. The ability to put a password on a folder wasn't even possible. Because of Espionage, this has all changed.
Disk images have many limitations. While they allow you to securely protect data, they are difficult to use, and can't be used to seamlessly protect application data on an individual basis, that is, until now.
Some applications have tried to make disk images easier to use by referring to them as "vaults" and giving you a "one-click" method for creating them. But the problem with this approach is that you still have to use a separate application to manage the vault, and you can't use it to protect important application data like email.
Apple's FileVault has a single vault that does protect application data, but it does this by encrypting your entire home folder. This "all or nothing" approach can slow down your computer and drain battery life because the process of encryption is expensive.
Your home folder has a lot of data stored inside of it. Application data, movies, music, etc. Most of it doesn't need encryption. Accessing this data, without encryption, is slow enough already because of the slow speed of hard disks, so why make it over 3x slower unnecessarily?
So we thought, "Why not simply have encrypted folders?"
That would solve all of those problems! Espionage lets you encrypt only the data that you want encrypted, and makes it easy to manage your encrypted data by doing all of the dirty work for you!
You don't have to worry about disk images, or "vaults". Just drag a folder onto Espionage and it takes care of the rest. From then on you can simply double-click on that folder and a password prompt will appear asking for that folder's password. Once you're done using the data that's inside of it, just right-click on it and select "Lock" from the menu to lock it. And protecting application data has never been easier.