The Telerik UI Menu has a built-in security trimming functionality which is enabled by default.
If the URL to which the Menu item points is not authorized, the item is hidden.
For more information, refer to the article on ASP.NET Core Authorization.
The security trimming functionality can be enabled through the
Html.Kendo().Menu() .Name("MainMenu") .SecurityTrimming(true)
<kendo-menu name="menu" security-trimming="true"> </kendo-menu>