The Telerik Reporting doesn't have any security features on its own so there is no out of the box solution. To accomplish that kind of available reports filtering, you will have to create a custom class that inherits Telerik.Reporting.Service.ReportService and to override the IReportService.ListAvailableReports() method to return only a filtered list of reports. We have attached a modified version of the Telerik Reporting examples to illustrate how this could be achieved.
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