diff --git a/project/ble_peripheral/ble_app_bladder_patch/system/security/ble_quick_security.c b/project/ble_peripheral/ble_app_bladder_patch/system/security/ble_quick_security.c
index 37b6bb7..41929b9 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/system/security/ble_quick_security.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/system/security/ble_quick_security.c
@@ -7,6 +7,7 @@
 
 #include "ble_quick_security.h"
 #include "peer_manager_handler.h"
+#include "nrf_ble_lesc.h"
 #include "app_error.h"
 #include <string.h>
 
@@ -34,6 +35,10 @@ void ble_security_quick_init(bool development_mode)
     // Initialize Peer Manager FIRST
     err_code = pm_init();
     APP_ERROR_CHECK(err_code);
+
+    // Initialize LESC module (ECDH P-256 key pair generation)
+    err_code = nrf_ble_lesc_init();
+    APP_ERROR_CHECK(err_code);
     
     // Configure security parameters
     memset(&sec_params, 0, sizeof(ble_gap_sec_params_t));
@@ -61,7 +66,7 @@ void ble_security_quick_init(bool development_mode)
         // ===== PRODUCTION MODE: Full security =====
         sec_params.bond         = 1;  // Enable bonding
         sec_params.mitm         = 1;  // Enable MITM
-        sec_params.lesc         = 0;  // Standard pairing
+        sec_params.lesc         = 1;  // LE Secure Connections (ECDH P-256)
         sec_params.keypress     = 0;
         sec_params.io_caps      = BLE_GAP_IO_CAPS_DISPLAY_ONLY;  // Show passkey
         sec_params.oob          = 0;
@@ -113,7 +118,13 @@ void ble_security_quick_pm_handler(pm_evt_t const *p_evt)
             if (m_state.dev_mode) {
                 DBG_PRINTF("DEV: Connected (no security)\r\n");
             } else {
-                DBG_PRINTF("PROD: Link secured (bonded)\r\n");
+                pm_conn_sec_status_t status;
+                if (pm_conn_sec_status_get(p_evt->conn_handle, &status) == NRF_SUCCESS) {
+                    DBG_PRINTF("PROD: Link secured - LESC=%d MITM=%d bonded=%d\r\n",
+                               status.lesc, status.mitm_protected, status.bonded);
+                } else {
+                    DBG_PRINTF("PROD: Link secured (bonded)\r\n");
+                }
             }
             break;