--- /dev/null
+<?php
+
+namespace Drupal\content_moderation;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Entity\EntityAccessControlHandler;
+use Drupal\Core\Entity\EntityInterface;
+
+/**
+ * The access control handler for the content_moderation_state entity type.
+ *
+ * @see \Drupal\content_moderation\Entity\ContentModerationState
+ */
+class ContentModerationStateAccessControlHandler extends EntityAccessControlHandler {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
+ // ContentModerationState is an internal entity type. Access is denied for
+ // viewing, updating, and deleting. In order to update an entity's
+ // moderation state use its moderation_state field.
+ return AccessResult::forbidden('ContentModerationState is an internal entity type.');
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function checkCreateAccess(AccountInterface $account, array $context, $entity_bundle = NULL) {
+ // ContentModerationState is an internal entity type. Access is denied for
+ // creating. In order to update an entity's moderation state use its
+ // moderation_state field.
+ return AccessResult::forbidden('ContentModerationState is an internal entity type.');
+ }
+
+}