diff --git a/acquia_spi/acquia_spi.module b/acquia_spi/acquia_spi.module
index 33c0231..248502b 100644
--- a/acquia_spi/acquia_spi.module
+++ b/acquia_spi/acquia_spi.module
@@ -513,6 +513,17 @@ function acquia_spi_get() {
       }
     }
   }
+
+  // It's worth sending along node access control information even if there are
+  // no modules implementing it - some alerts are simpler if we know we don't
+  // have to worry about node access.
+
+  // Check for node grants modules.
+  $additional_data['node_grants_modules'] = module_implements("node_grants", TRUE);
+
+  // Check for node access modules.
+  $additional_data['node_access_modules'] = module_implements("node_access", TRUE);
+
   if (!empty($additional_data)) {
     // JSON encode this additional data.
     $spi['additional_data'] = drupal_json_encode($additional_data);