Modifying the included auth controller for Laravel 5.3

I am using the basic login and registration scaffold that comes with Laravel 5.3. I've also created a logging function so that I can log some of the basic user actions for my platform, such as updating or deleting records.

I'd like to add the logging to the user login process so that I can log when they've logged in and a failed attempt. Because I'm using the basic included scaffolding, I'm not sure where to do this?

via Chebli Mohamed