diff --git a/monkey/infection_monkey/exploit/HostExploiter.py b/monkey/infection_monkey/exploit/HostExploiter.py
index 9490b8706..f910cfa49 100644
--- a/monkey/infection_monkey/exploit/HostExploiter.py
+++ b/monkey/infection_monkey/exploit/HostExploiter.py
@@ -3,7 +3,7 @@ import threading
 from abc import abstractmethod
 from datetime import datetime
 from ipaddress import IPv4Address
-from typing import Dict, Sequence
+from typing import Dict, Sequence, Tuple
 
 from common.agent_events import ExploitationEvent, PropagationEvent
 from common.event_queue import IAgentEventQueue
@@ -132,7 +132,7 @@ class HostExploiter:
         self,
         target: str,
         propagation_success: bool,
-        tags: frozenset = frozenset(),
+        tags: Tuple[str] = tuple(),
         error_message: str = "",
     ):
         propagation_event = PropagationEvent(
@@ -141,7 +141,7 @@ class HostExploiter:
             success=propagation_success,
             exploiter_name=self.__class__.__name__,
             error_message=error_message,
-            tags=tags,
+            tags=frozenset(tags),
         )
         self.agent_event_queue.publish(propagation_event)
 
@@ -149,7 +149,7 @@ class HostExploiter:
         self,
         target: str,
         exploitation_success: bool,
-        tags: frozenset = frozenset(),
+        tags: Tuple[str] = tuple(),
         error_message: str = "",
     ):
         exploitation_event = ExploitationEvent(
@@ -158,6 +158,6 @@ class HostExploiter:
             success=exploitation_success,
             exploiter_name=self.__class__.__name__,
             error_message=error_message,
-            tags=tags,
+            tags=frozenset(tags),
         )
         self.agent_event_queue.publish(exploitation_event)