<PackageReference Include="System.Security.Permissions" Version="4.7.0-preview2.19523.17" />

API Differences between 4.7.0-preview2.19523.17 and 9.0.2

34 Additions 8 Removals

System.DirectoryServices

System.Security

System.Security.Permissions

System.Security.Policy

System.Xaml.Permissions