Abstract: A method includes determining, via a database interface system, a first number of database queries received from a query source during a time period. The method includes preventing, via the database interface system, access to requested information by the query source when the first number does not satisfy a first threshold. The method also includes preventing, via the database interface system, access to the requested information by the query source when no click-through commands associated with a second number of consecutive prior search results were received during the time period.