"Little Flocker is a utility for keeping your personal data safe from spyware, ransomware, misbehaving applications, and other common threats to your computer’s security, by preventing any application from accessing your files without explicit permission. Available for macOS El Capitan and Sierra, Little Flocker is easy to install and relatively unobtrusive to the user." Not sure about the 'easy to install' part, but otherwise a cool new app to keep your Mac free of security threats.
