diff --git a/elements/adversary-groups.json b/elements/adversary-groups.json
index dc203a9..36325c3 100644
--- a/elements/adversary-groups.json
+++ b/elements/adversary-groups.json
@@ -22,6 +22,16 @@
       "country": "CN",
       "group": "Stalker Panda"
     },
+    {
+      "country": "CN",
+      "group": "Nitro",
+      "refs": [
+        "http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/the_nitro_attacks.pdf"
+      ],
+      "synonyms": [
+       "Covert Grove"
+      ]
+    },
     {
       "country": "CN",
       "group": "Codoso",
@@ -733,7 +743,8 @@
     "Sands Casino",
     "Cleaver",
     "Threat Group-2889",
-    "Codoso"
+    "Codoso",
+    "Nitro"
   ],
   "type": "Adversary Groups",
   "authors": [