Sometimes Makers create an awesome app that has a need to be secure, but in the excitement of making the app we neglect that when making an app that talks to SharePoint we also need to lock down the SharePoint data so it doesnt randomly pop up in peoples feeds, or in a search result, or we leave the list open so a random employee can edit that item.
This tutorial steps you through how to secure your list and grant the right access.
This is Part 1 of a 2 part tutorial - part 2 will handle enabling access using Http requests to SharePoint.