Implementing a Security Extension
Microsoft Windows Authentication is the primary system for securing reports in SQL Server Reporting Services. In certain cases, however, you may need to extend the Reporting Services security system to accommodate custom security in your enterprise. You can do this using the development platform provided by the Reporting Services API. This section will present an overview of security extensions in Reporting Services.
For complete details about implementing, deploying, and removing a Reporting Services security extension, please see SQL Server Reporting Services Product Samples.