diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index 09bb0a3..3db1fbf 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -6439,7 +6439,8 @@
         "refs": [
           "https://resecurity.com/blog/parliament_races/",
           "https://www.nbcnews.com/politics/national-security/iranian-backed-hackers-stole-data-major-u-s-government-contractor-n980986"
-        ]
+        ],
+        "attribution-confidence": "10"
       },
       "uuid": "29cfe970-5446-4cfc-a2da-00e9f49e02ba",
       "value": "IRIDIUM"