Disable front-end queries to prevent individual entries from being accessed and/or indexed.

eth-timeline.php

@@ -104,11 +104,14 @@ class ETH_Timeline {
 				'parent_item_colon'  => __( 'Entries:', 'eth-timeline' ),
 			),
 			'public'              => true,
+			'publicly_queryable'  => false,
+			'query_var'           => false,
 			'has_archive'         => false,
 			'exclude_from_search' => true,
 			'show_in_nav_menus'   => false,
 			'show_in_admin_bar'   => true,
 			'rewrite'             => false,
+			'delete_with_user'    => false,
 			'supports'            => array(
 				'title',
 				'editor',