Get Sandbox Status from the Mac App Store
Sandbox Status shows you which apps have access to which parts of your computer.
Apps with full access have read access to almost every file on your computer and also write access to all files in your home directory.
Also they can access your personal information like the phone book, emails and all devices like camera, microphone etc.
It is recommended to use sandboxed apps because of this reason.
Sandbox Status helps you to identify risky apps.