diff --git a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2mRedisSecurityStore.java b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2mRedisSecurityStore.java
index 5ba0fb5aa0..f837931b19 100644
--- a/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2mRedisSecurityStore.java
+++ b/common/transport/lwm2m/src/main/java/org/thingsboard/server/transport/lwm2m/server/store/TbLwM2mRedisSecurityStore.java
@@ -59,15 +59,27 @@ public class TbLwM2mRedisSecurityStore implements TbEditableSecurityStore {
                 TbLwM2MSecurityInfo tbLwM2MSecurityInfo = JavaSerDesUtil.decode(data);
                 if (tbLwM2MSecurityInfo != null) {
                     if (SecurityMode.NO_SEC.equals(tbLwM2MSecurityInfo.getSecurityMode())){
+
+                        // for tests: redis connect NoSec (securityInfo == null)
+                        log.info("lwm2m redis securityStore (decode -ok). Endpoint: [{}], secMode: [NoSec] key: [{}], data [{}]", endpoint, SEC_EP, data);
+
                         return SecurityInfo.newPreSharedKeyInfo(SecurityMode.NO_SEC.toString(), SecurityMode.NO_SEC.toString(),
                                 SecurityMode.NO_SEC.toString().getBytes());
                     } else {
                         return tbLwM2MSecurityInfo.getSecurityInfo();
                     }
                 } else if (SecurityMode.NO_SEC.equals(getSecurityModeByRegistration (connection,  endpoint))){
+
+                    // for tests: redis connect NoSec (securityInfo == null)
+                    log.info("lwm2m redis securityStore (decode - bad, registration - unsecure). Endpoint: [{}], secMode: [NoSec] key: [{}], data [{}]", endpoint, SEC_EP, data);
+
                     return SecurityInfo.newPreSharedKeyInfo(SecurityMode.NO_SEC.toString(), SecurityMode.NO_SEC.toString(),
                             SecurityMode.NO_SEC.toString().getBytes());
                 } else {
+
+                    // for tests: redis connect NoSec (securityInfo == null)
+                    log.info("lwm2m redis securityStore (decode - bad, registration is not unsecure) - return null. Endpoint: [{}], key: [{}], data [{}]", endpoint, SEC_EP, data);
+
                     return null;
                 }
             }
@@ -127,6 +139,11 @@ public class TbLwM2mRedisSecurityStore implements TbEditableSecurityStore {
             }
 
             byte[] previousData = connection.getSet((SEC_EP + tbSecurityInfo.getEndpoint()).getBytes(), tbSecurityInfoSerialized);
+
+                // for tests: redis connect NoSec (securityInfo == null)
+            log.info("lwm2m redis connect. Endpoint: [{}], secMode: [{}] key: [{}], tbSecurityInfoSerialized [{}]",
+                    tbSecurityInfo.getEndpoint(), tbSecurityInfo.getSecurityMode().name(), SEC_EP, tbSecurityInfoSerialized);
+
             if (previousData != null && info != null) {
                 String previousIdentity = ((TbLwM2MSecurityInfo) JavaSerDesUtil.decode(previousData)).getSecurityInfo().getPskIdentity();
                 if (previousIdentity != null && !previousIdentity.equals(info.getPskIdentity())) {
@@ -191,7 +208,7 @@ public class TbLwM2mRedisSecurityStore implements TbEditableSecurityStore {
             String typeModeStr = registrationNode.get("transportdata").get("identity").get("type").asText();
             return "unsecure".equals(typeModeStr) ? SecurityMode.NO_SEC : null;
         } catch (Exception e) {
-            log.error("Redis: Failed get SecurityMode by Registration, endpoint: [{}]", endpoint);
+            log.error("Redis: Failed get SecurityMode by Registration, endpoint: [{}]", endpoint, e);
             return null;
         }