NHibernate listener assuring that logged in user cannot reach data from other tenants

MultitenantAssuranceListener.cs

public class MultitenantAssuranceListener : IPostLoadEventListener, IPreUpdateEventListener, IPreInsertEventListener, IPreDeleteEventListener
{
    public void OnPostLoad(PostLoadEvent @event)
    {
        if (@event.Entity is IHaveTenant)
        {
            var tenantId = ((IHaveTenant)@event.Entity).TenantId;
            if (Scope.CurrentTenant.Id != tenantId)
                throw new InvalidOperationException("Ilegal data access.");
        }
    }

    public bool OnPreUpdate(PreUpdateEvent @event)
    {
        if (@event.Entity is IHaveTenant)
        {
            var state = @event.OldState ?? @event.State;
            var tenantId = (Account)state.GetValue(Array.IndexOf(@event.Persister.PropertyNames, "TenantId"));

            if (Scope.CurrentTenant.Id != tenantId)
                throw new InvalidOperationException("Ilegal data access.");
        }

        return false;
    }

    public bool OnPreInsert(PreInsertEvent @event)
    {
        if (@event.Entity is IHaveTenant)
        {
            if (Scope.CurrentTenant.Id != ((IHaveTenant)@event.Enttiy).TenantId)
                throw new InvalidOperationException("Ilegal data access.");
        }

        return false;
    }
    
    public bool OnPreDelete(PreDeleteEvent @event)
    {
        if (@event.Entity is IHaveTenant)
        {
            if (Scope.CurrentTenant.Id != ((IHaveTenant)@event.Enttiy).TenantId)
                throw new InvalidOperationException("Ilegal data access.");
        }

        return false;
    }
}