<PackageReference Include="System.Security.Permissions" Version="9.0.10" />

ConfigurationPermissionAttribute

Creates a ConfigurationPermission object that either grants or denies the marked target permission to access sections of configuration files.
using System.Security; using System.Security.Permissions; namespace System.Configuration { [Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId = "SYSLIB0003", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")] [AttributeUsage(AttributeTargets.All, AllowMultiple = true, Inherited = false)] public sealed class ConfigurationPermissionAttribute : CodeAccessSecurityAttribute { public ConfigurationPermissionAttribute(SecurityAction action) : base((SecurityAction)0) { } public override IPermission CreatePermission() { return null; } } }