One method of protecting confidential corporate data accessed through an Internet-based application is:

One approach for Internet access is to create a “tiered” application approach that manages data in layers. There can be any number of layers; however, the most typical architecture is to use a three-tier approach: presentation layer, business logic layer, and the data layer. This is sometimes referred to as the Internet Computing Model because the browser is used to connect to an application server that then connects to a database.