From bc196d61eb7cf79b2f52ddfcdbeb56c7821e2045 Mon Sep 17 00:00:00 2001
From: Viacheslav Klimov <viacheslavklimov11@gmail.com>
Date: Thu, 19 Feb 2026 15:37:34 +0200
Subject: [PATCH] Remove dead SecurityManager code (JEP 486)

System.getSecurityManager() always returns null since Java 24.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 .../org/thingsboard/common/util/ThingsBoardThreadFactory.java | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/common/util/src/main/java/org/thingsboard/common/util/ThingsBoardThreadFactory.java b/common/util/src/main/java/org/thingsboard/common/util/ThingsBoardThreadFactory.java
index a6218b2eb8..272e44ba7e 100644
--- a/common/util/src/main/java/org/thingsboard/common/util/ThingsBoardThreadFactory.java
+++ b/common/util/src/main/java/org/thingsboard/common/util/ThingsBoardThreadFactory.java
@@ -33,9 +33,7 @@ public class ThingsBoardThreadFactory implements ThreadFactory {
     }
 
     private ThingsBoardThreadFactory(String name) {
-        SecurityManager s = System.getSecurityManager();
-        group = (s != null) ? s.getThreadGroup() :
-                Thread.currentThread().getThreadGroup();
+        group = Thread.currentThread().getThreadGroup();
         namePrefix = name + "-" +
                 poolNumber.getAndIncrement() +
                 "-thread-";