diff --git a/lib/tfw/networking/server/tfw_server.py b/lib/tfw/networking/server/tfw_server.py
index 5f297df..c0d98f5 100644
--- a/lib/tfw/networking/server/tfw_server.py
+++ b/lib/tfw/networking/server/tfw_server.py
@@ -9,6 +9,7 @@ from tornado.web import Application
 from tfw.networking.event_handlers import ServerUplinkConnector
 from tfw.networking.server import EventHandlerConnector
 from tfw.networking import MessageSender
+from tfw.crypto import KeyManager, verify_message, sign_message
 from tfw.config.logs import logging
 from .zmq_websocket_proxy import ZMQWebSocketProxy
 
@@ -24,6 +25,7 @@ class TFWServer:
     def __init__(self):
         self._event_handler_connector = EventHandlerConnector()
         self._uplink_connector = ServerUplinkConnector()
+        self._auth_key = KeyManager().auth_key
 
         self.application = Application([(
             r'/ws', ZMQWebSocketProxy, {
@@ -37,13 +39,16 @@ class TFWServer:
     def handle_trigger(self, message):
         if 'trigger' in message:
             LOG.debug('Executing handler for trigger "%s"', message.get('trigger', ''))
-            self._uplink_connector.send_to_eventhandler({
+            fsm_eh_command = {
                 'key': 'fsm',
                 'data': {
                     'command': 'trigger',
-                    'value': message.get('trigger', '')
+                    'value': message['trigger']
                 }
-            })
+            }
+            if verify_message(self._auth_key, message):
+                sign_message(self._auth_key, fsm_eh_command)
+            self._uplink_connector.send_to_eventhandler(fsm_eh_command)
 
     def handle_recover(self, message):
         if message['key'] == 'recover':