dotnet-core/release-notes/3.0/api-diff/Asp.Net/3.0.0_Microsoft.AspNetCore.Authentication.Abstractions.md

Microsoft.AspNetCore.Authentication.Abstractions

 {
     namespace Microsoft.AspNetCore.Authentication {
         public class AuthenticationOptions {
+            public bool RequireAuthenticatedSignIn { get; set; }
         }
     }
 }