<PackageReference Include="System.Security.Permissions" Version="10.0.0-preview.1.25080.5" />

HostSecurityManagerOptions

Specifies the security policy components to be used by the host security manager.
namespace System.Security { [Flags] public enum HostSecurityManagerOptions { AllFlags = 31, HostAppDomainEvidence = 1, HostAssemblyEvidence = 4, HostDetermineApplicationTrust = 8, HostPolicyLevel = 2, HostResolvePolicy = 16, None = 0 } }