Knox - an application to encrypt documents that are not designed to share or you want to keep from prying eyes, but little if there are situations where such a procedure is absolutely necessary. Many may argue that there is a built-in FileVault, and will be in its own right, so why the redundancy? But the application Knox, offers a more user-friendly and intuitive interface, but performs the same function encryption using the AES 128/256-bit - you choose.
What's new in Version 2.3.2:
* This update includes improved El Capitan compatibility and several bug fixes.

FIXED
* Fixed problem where Knox would crash on launch in Mac OS X 10.11 El Capitan Beta.
* Fixed problem where Dock icon would high bounce on launch.
* Fixed problem in the auto-updater where Beta builds would be included even if the preference was set otherwise.