diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index ff7bfb8..c73619f 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -2636,7 +2636,8 @@
           "ITG12",
           "Blue Python",
           "SUMMIT",
-          "UNC4210"
+          "UNC4210",
+          "Secret Blizzard"
         ],
         "targeted-sector": [
           "Government, Administration",