https://learn.microsoft.com/en-us/dotnet/api/system.security.permissions.zoneidentitypermissionattribute?view=netframework-4.8.1&redirectedfrom=MSDN
ZoneIdentityPermissionAttribute Class (System.Security.Permissions) | Microsoft Learn
Allows security actions for ZoneIdentityPermission to be applied to code using declarative security. This class cannot be inherited.
class systemsecuritypermissionsmicrosoftlearn