diff --git a/config/site_settings.yml b/config/site_settings.yml
index d36ccedf892..038b2b6b0b7 100644
--- a/config/site_settings.yml
+++ b/config/site_settings.yml
@@ -1396,7 +1396,7 @@ security:
     list_type: compact
   slow_down_crawler_rate: 60
   content_security_policy:
-    default: false
+    default: true
   content_security_policy_report_only:
     default: false
   content_security_policy_collect_reports: