Security threats are a result of the various interaction points that an application provides to the external world, and the various users that can interact with these interfaces. For instance Your staff, Our Staff, and Third Party Servers are interacting with our Systems at any given point of time. Each of these actors need to have different access levels and different rights and permissions.
An add-on is a software extension that adds extra features to a program. It may extend certain functions within the program, add new items to the program’s interface, or give the program additional capabilities. For example, Mozilla Firefox, a popular Web browser, supports add-ons such as the Google toolbar, ad blockers, and Web developer tools. Some computer games support add-ons that provide extra maps, new characters, or give the player game-editing capabilities.