diff --git a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncher.java b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncher.java
index 79959151..dee3cd85 100644
--- a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncher.java
+++ b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncher.java
@@ -442,6 +442,7 @@ public static void main(String... args) throws Throwable {
         EnvHelper.checkDangerousParams();
         JVMHelper.checkStackTrace(ClientLauncher.class);
         LogHelper.printVersion("Client Launcher");
+        System.setSecurityManager(new ClientSecurityManager());
         engine.readKeys();
         HWIDProvider.registerHWIDs();
         LauncherGuardManager.initGuard(true);
diff --git a/Launcher/src/main/java/pro/gravit/launcher/client/ClientSecurityManager.java b/Launcher/src/main/java/pro/gravit/launcher/client/ClientSecurityManager.java
new file mode 100644
index 00000000..28b4ab01
--- /dev/null
+++ b/Launcher/src/main/java/pro/gravit/launcher/client/ClientSecurityManager.java
@@ -0,0 +1,29 @@
+package pro.gravit.launcher.client;
+
+import java.security.Permission;
+
+public class ClientSecurityManager extends SecurityManager {
+    @Override
+    public void checkPermission(Permission perm)
+    {
+        String permName = perm.getName();
+        if(permName == null) return;
+        if (permName.startsWith("exitVM"))
+        {
+            Class<?>[] classContexts = getClassContext();
+            String callingClass = classContexts.length > 3 ? classContexts[4].getName() : "none";
+            if (!(callingClass.startsWith("pro.gravit.")))
+            {
+                throw new ExitTrappedException();
+            }
+        }
+    }
+
+    @Override
+    public void checkPermission(Permission perm, Object context) {
+    }
+
+    public static class ExitTrappedException extends SecurityException {
+
+    }
+}