Espionage makes it really easy to protect application data efficiently. The basic idea is:
Espionage comes with many built-in application templates. They make it a snap to protect an application, because they handle all of those steps for you!
While Espionage comes with many templates, it might not have one for the application that you'd like to encrypt. You can still protect its data with Espionage, just find out where it stores it, add the folders to Espionage, and add the application to each of the folder's application associations.