<PackageReference Include="System.Security.Permissions" Version="10.0.0-preview.2.25163.2" />

AspNetHostingPermissionAttribute

public sealed class AspNetHostingPermissionAttribute : CodeAccessSecurityAttribute
Allows security actions for AspNetHostingPermission to be applied to code using declarative security. This class cannot be inherited.
public AspNetHostingPermissionLevel Level { get; set; }

Gets or sets the current hosting permission level.

public AspNetHostingPermissionAttribute(SecurityAction action)

Initializes a new instance of the AspNetHostingPermissionAttribute class.