diff --git a/monkey/monkey_island/cc/environment/data_dir_generator.py b/monkey/monkey_island/cc/environment/data_dir_generator.py
index 877faba3c..a809f4360 100644
--- a/monkey/monkey_island/cc/environment/data_dir_generator.py
+++ b/monkey/monkey_island/cc/environment/data_dir_generator.py
@@ -1,26 +1,28 @@
 import os
+import sys
 
 import ntsecuritycon
 import win32api
 import win32con
 import win32security
 
-from monkey_island.cc.environment.os import is_windows_os
 from monkey_island.cc.server_utils.consts import DEFAULT_DATA_DIR
 
+is_windows_os = sys.platform.startswith("win")
+
 
 def create_data_dir(data_dir: str) -> None:
     if not os.path.isdir(data_dir):
         os.makedirs(data_dir, mode=0o700)
-    if is_windows_os():  # `mode=0o700` doesn't work on Windows
-        set_data_dir_security_to_read_by_owner(data_dir_path=data_dir)
+        if is_windows_os:  # `mode=0o700` doesn't work on Windows
+            set_data_dir_security_to_read_by_owner(data_dir_path=data_dir)
 
 
 def create_default_data_dir() -> None:
     if not os.path.isdir(DEFAULT_DATA_DIR):
         os.mkdir(DEFAULT_DATA_DIR, mode=0o700)
-    if is_windows_os():  # `mode=0o700` doesn't work on Windows
-        set_data_dir_security_to_read_by_owner(data_dir_path=DEFAULT_DATA_DIR)
+        if is_windows_os:  # `mode=0o700` doesn't work on Windows
+            set_data_dir_security_to_read_by_owner(data_dir_path=DEFAULT_DATA_DIR)
 
 
 def set_data_dir_security_to_read_by_owner(data_dir_path: str) -> None:
@@ -30,7 +32,11 @@ def set_data_dir_security_to_read_by_owner(data_dir_path: str) -> None:
         data_dir_path, win32security.DACL_SECURITY_INFORMATION
     )
     dacl = win32security.ACL()
-    dacl.AddAccessAllowedAce(win32security.ACL_REVISION, ntsecuritycon.FILE_GENERIC_READ, user)
+    dacl.AddAccessAllowedAce(
+        win32security.ACL_REVISION,
+        ntsecuritycon.FILE_GENERIC_READ | ntsecuritycon.FILE_GENERIC_WRITE,
+        user,
+    )
     security_descriptor.SetSecurityDescriptorDacl(1, dacl, 0)
     win32security.SetFileSecurity(
         data_dir_path, win32security.DACL_SECURITY_INFORMATION, security_descriptor
diff --git a/monkey/monkey_island/cc/environment/os.py b/monkey/monkey_island/cc/environment/os.py
deleted file mode 100644
index 195e54fd3..000000000
--- a/monkey/monkey_island/cc/environment/os.py
+++ /dev/null
@@ -1,5 +0,0 @@
-import sys
-
-
-def is_windows_os():
-    return sys.platform.startswith("win")