diff --git a/CHANGELOG.md b/CHANGELOG.md
index e48d19cd..71bf9a7c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+
+## [Unreleased]
+
+### Changed
+- Remove unused insecure IN-CORE client [#581](https://github.com/IN-CORE/pyincore/issues/581)
+
+
 ## [1.19.0] - 2024-06-12
 
 ### Changed
diff --git a/docs/source/modules.rst b/docs/source/modules.rst
index 41c35692..3e9d357e 100644
--- a/docs/source/modules.rst
+++ b/docs/source/modules.rst
@@ -575,8 +575,6 @@ client
     :members:
 ..  autoclass:: client.IncoreClient
     :members:
-..  autoclass:: client.InsecureIncoreClient
-    :members:
 
 dataservice
 ===========
diff --git a/pyincore/__init__.py b/pyincore/__init__.py
index 6e7b7e55..f0387038 100644
--- a/pyincore/__init__.py
+++ b/pyincore/__init__.py
@@ -8,7 +8,6 @@
 # The order of import matters. You need to import module by order of dependency
 from pyincore.client import Client
 from pyincore.client import IncoreClient
-from pyincore.client import InsecureIncoreClient
 from pyincore.hazardservice import HazardService
 from pyincore.utils.expressioneval import Parser
 from pyincore.utils.cge_ml_file_util import CGEMLFileUtil
diff --git a/pyincore/client.py b/pyincore/client.py
index 966f81c1..0267b1dd 100644
--- a/pyincore/client.py
+++ b/pyincore/client.py
@@ -422,24 +422,3 @@ def clear_cache(self):
         # clear entry from service.json
         update_hash_entry("edit", hashed_url=self.hashed_service_url)
         return
-
-
-class InsecureIncoreClient(Client):
-    """IN-CORE service client class that bypasses Ambassador auth. It contains token and service root url.
-
-        Args:
-            service_url (str): Service url.
-            username (str): Username string.
-
-        """
-
-    def __init__(self, service_url: str = None, username: str = None):
-        super().__init__()
-        if service_url is None or len(service_url.strip()) == 0:
-            service_url = pyglobals.INCORE_API_PROD_URL
-        self.service_url = service_url
-        if username is None or len(username.strip()) == 0:
-            self.session.headers["x-auth-userinfo"] = pyglobals.INCORE_LDAP_TEST_USER_INFO
-        else:
-            user_info = "{\"preferred_username\": \"" + username + "\"}"
-            self.session.headers["x-auth-userinfo"] = user_info
diff --git a/tests/pyincore/test_client.py b/tests/pyincore/test_client.py
index fa77cdad..aa1243bf 100644
--- a/tests/pyincore/test_client.py
+++ b/tests/pyincore/test_client.py
@@ -8,7 +8,7 @@
 import pytest
 import requests
 
-from pyincore import Client, IncoreClient, InsecureIncoreClient, DataService
+from pyincore import Client, IncoreClient, DataService
 
 
 def test_client_success(monkeypatch):