Espionage is a unique encryption application. It lets you encrypt andpassword protect individual folders, and interact with them straightfrom the Finder.No longer is it necessary to encrypt your entire homefolder just to protect your email, or chat histories.
Encrypting data unnecessarily slows your computer down, and forlaptop users, can be a drain on battery life. Espionage solves thisproblem by letting you encrypt only what you want, and it does it whileintegrating directly with the Finder.

Just double-click on a folder and enter your password at the promptto unlock. Right-click on it to re-lock. Folder encryption has neverbeen this easy before.
And for users who just want to put a password on unimportant datawithout securely encrypting it, such as a folder full of hundreds ofvideos that they don’t want their grandparents to see, Espionage hasthem covered. While securely encrypting folders is its chief purpose,Espionage can put a password on any folder in a flash without touchingits contents.
WHAT’S NEW
Version 2.8.3:
•     NEW: Converted EspionageHelper to launchd agent, resulting in improvements to:
•     Improved security for non-enrypted folders (which are still obviously insecure)
•     Removes startup errors associated with Apple’s buggy Login Items code
•     Crash recovery
•     NEW: iPhoto application template
•     IMPROVED: Notification regarding moving or renaming unlocked encrypted folders.
•     IMPROVED: Updated iCal template to reflect changes by Apple
•     FIXED: Check to prevent encryption of Library folder
•     FIXED: Rare situation where incorrect applications would be suggested as associations for a folder
•     FIXED: SmartMove did not update app associations
•     FIXED: Unnecessarily re-prompted for master password when stopping helper from preferences
REQUIREMENTS
Mac OS X 10.5 or later