diff --git a/.github/scripts/check_language_properties.py b/.github/scripts/check_language_properties.py
index 4bb88fdd..08042d11 100644
--- a/.github/scripts/check_language_properties.py
+++ b/.github/scripts/check_language_properties.py
@@ -9,7 +9,7 @@ The script also provides functionality to update the translation files to match
 adjusting the format.
 
 Usage:
-    python script_name.py --reference-file <path_to_reference_file> --branch <branch_name> [--files <list_of_changed_files>]
+    python check_language_properties.py --reference-file <path_to_reference_file> --branch <branch_name> [--actor <actor_name>] [--files <list_of_changed_files>]
 """
 
 import copy
@@ -19,6 +19,10 @@ import argparse
 import re
 
 
+# Maximum size for properties files (e.g., 200 KB)
+MAX_FILE_SIZE = 200 * 1024
+
+
 def parse_properties_file(file_path):
     """Parses a .properties file and returns a list of objects (including comments, empty lines, and line numbers)."""
     properties_list = []
@@ -96,7 +100,7 @@ def write_json_file(file_path, updated_properties):
 def update_missing_keys(reference_file, file_list, branch=""):
     reference_properties = parse_properties_file(reference_file)
     for file_path in file_list:
-        basename_current_file = os.path.basename(branch + file_path)
+        basename_current_file = os.path.basename(os.path.join(branch, file_path))
         if (
             basename_current_file == os.path.basename(reference_file)
             or not file_path.endswith(".properties")
@@ -104,7 +108,7 @@ def update_missing_keys(reference_file, file_list, branch=""):
         ):
             continue
 
-        current_properties = parse_properties_file(branch + file_path)
+        current_properties = parse_properties_file(os.path.join(branch, file_path))
         updated_properties = []
         for ref_entry in reference_properties:
             ref_entry_copy = copy.deepcopy(ref_entry)
@@ -115,15 +119,15 @@ def update_missing_keys(reference_file, file_list, branch=""):
                     if ref_entry_copy["key"] == current_entry["key"]:
                         ref_entry_copy["value"] = current_entry["value"]
             updated_properties.append(ref_entry_copy)
-        write_json_file(branch + file_path, updated_properties)
+        write_json_file(os.path.join(branch, file_path), updated_properties)
 
 
 def check_for_missing_keys(reference_file, file_list, branch):
-    update_missing_keys(reference_file, file_list, branch + "/")
+    update_missing_keys(reference_file, file_list, branch)
 
 
 def read_properties(file_path):
-    if (os.path.isfile(file_path) and os.path.exists(file_path)):
+    if os.path.isfile(file_path) and os.path.exists(file_path):
         with open(file_path, "r", encoding="utf-8") as file:
             return file.read().splitlines()
     return [""]
@@ -142,18 +146,36 @@ def check_for_differences(reference_file, file_list, branch, actor):
 
     only_reference_file = True
 
-    for file_path in file_list[0].split():
-        basename_current_file = os.path.basename(branch + "/" + file_path)
+    file_arr = file_list
+
+    if len(file_list) == 1:
+        file_arr = file_list[0].split()
+    base_dir = os.path.abspath(os.path.join(os.getcwd(), "src", "main", "resources"))
+
+    for file_path in file_arr:
+        absolute_path = os.path.abspath(file_path)
+        # Verify that file is within the expected directory
+        if not absolute_path.startswith(base_dir):
+            raise ValueError(f"Unsafe file found: {file_path}")
+        # Verify file size before processing
+        if os.path.getsize(os.path.join(branch, file_path)) > MAX_FILE_SIZE:
+            raise ValueError(
+                f"The file {file_path} is too large and could pose a security risk."
+            )
+
+        basename_current_file = os.path.basename(os.path.join(branch, file_path))
         if (
             basename_current_file == basename_reference_file
-            or not file_path.startswith("src/main/resources/messages_")
+            or not file_path.startswith(
+                os.path.join("src", "main", "resources", "messages_")
+            )
             or not file_path.endswith(".properties")
             or not basename_current_file.startswith("messages_")
         ):
             continue
         only_reference_file = False
-        report.append(f"#### 🗂️ **Checking File:** `{basename_current_file}`...")
-        current_lines = read_properties(branch + "/" + file_path)
+        report.append(f"#### 📃 **Checking File:** `{basename_current_file}`...")
+        current_lines = read_properties(os.path.join(branch, file_path))
         reference_line_count = len(reference_lines)
         current_line_count = len(current_lines)
 
@@ -197,6 +219,11 @@ def check_for_differences(reference_file, file_list, branch, actor):
             extra_keys_str = "`, `".join(extra_keys_list)
             report.append("- **Test 2 Status:** ❌ Failed")
             if missing_keys_list:
+                for key in missing_keys_list:
+                    if " " in key:
+                        report.append(
+                            f"  - **Issue:** One or more keys in ***{basename_current_file}*** contain spaces `{missing_keys_str}`!"
+                        )
                 report.append(
                     f"  - **Issue:** There are keys in ***{basename_current_file}*** `{missing_keys_str}` that are not present in ***{basename_reference_file}***!"
                 )
@@ -252,10 +279,20 @@ if __name__ == "__main__":
     )
     args = parser.parse_args()
 
+    # Sanitize --actor input to avoid injection attacks
+    if args.actor:
+        args.actor = re.sub(r"[^a-zA-Z0-9_\\-]", "", args.actor)
+
+    # Sanitize --branch input to avoid injection attacks
+    if args.branch:
+        args.branch = re.sub(r"[^a-zA-Z0-9\\-]", "", args.branch)
+
     file_list = args.files
     if file_list is None:
         file_list = glob.glob(
-            os.getcwd() + "/src/**/messages_*.properties", recursive=True
+            os.path.join(
+                os.getcwd(), "src", "main", "resources", "messages_*.properties"
+            )
         )
         update_missing_keys(args.reference_file, file_list)
     else:
diff --git a/.github/workflows/check_properties.yml b/.github/workflows/check_properties.yml
index 2790bb48..b46efdc5 100644
--- a/.github/workflows/check_properties.yml
+++ b/.github/workflows/check_properties.yml
@@ -50,10 +50,7 @@ jobs:
           echo "Getting list of changed files from PR..."
           gh pr view ${{ github.event.pull_request.number }} --json files -q ".files[].path" | grep -E '^src/main/resources/messages_[a-zA-Z_]+\.properties$' > ../changed_files.txt
           cd ..
-          echo "Setting branch path..."
-          BRANCH_PATH="pr-branch"
 
-          echo "BRANCH_PATH=${BRANCH_PATH}" >> $GITHUB_ENV
           echo "Processing changed files..."
           mapfile -t CHANGED_FILES < changed_files.txt
 
@@ -61,7 +58,6 @@ jobs:
           echo "CHANGED_FILES=${CHANGED_FILES_STR}" >> $GITHUB_ENV
 
           echo "Changed files: ${CHANGED_FILES_STR}"
-          echo "Branch: ${BRANCH_PATH}"
 
       - name: Determine reference file
         id: determine-file
@@ -85,30 +81,38 @@ jobs:
           python main-branch/.github/scripts/check_language_properties.py \
             --actor ${{ github.event.pull_request.user.login }} \
             --reference-file "${REFERENCE_FILE}" \
-            --branch "${BRANCH_PATH}" \
-            --files "${CHANGED_FILES[@]}" > failure.txt || true
+            --branch pr-branch \
+            --files "${CHANGED_FILES[@]}" > result.txt || true
 
       - name: Capture output
         id: capture-output
         run: |
-          if [ -f failure.txt ] && [ -s failure.txt ]; then
-            echo "Test failed, capturing output..."
-            ERROR_OUTPUT=$(cat failure.txt)
-            echo "ERROR_OUTPUT<<EOF" >> $GITHUB_ENV
-            echo "$ERROR_OUTPUT" >> $GITHUB_ENV
+          if [ -f result.txt ] && [ -s result.txt ]; then
+            echo "Test, capturing output..."
+            SCRIPT_OUTPUT=$(cat result.txt)
+            echo "SCRIPT_OUTPUT<<EOF" >> $GITHUB_ENV
+            echo "$SCRIPT_OUTPUT" >> $GITHUB_ENV
             echo "EOF" >> $GITHUB_ENV
-            echo "${ERROR_OUTPUT}"
+            echo "${SCRIPT_OUTPUT}"
+
+            # Set FAIL_JOB to true if SCRIPT_OUTPUT contains ❌
+            if [[ "$SCRIPT_OUTPUT" == *"❌"* ]]; then
+              echo "FAIL_JOB=true" >> $GITHUB_ENV
+            else
+              echo "FAIL_JOB=false" >> $GITHUB_ENV
+            fi
           else
-            echo "No errors found."
-            echo "ERROR_OUTPUT=" >> $GITHUB_ENV
+            echo "No update found."
+            echo "SCRIPT_OUTPUT=" >> $GITHUB_ENV
+            echo "FAIL_JOB=false" >> $GITHUB_ENV
           fi
 
       - name: Post comment on PR
-        if: env.ERROR_OUTPUT != ''
+        if: env.SCRIPT_OUTPUT != ''
         uses: actions/github-script@v7
         with:
           script: |
-            const { GITHUB_REPOSITORY, ERROR_OUTPUT } = process.env;
+            const { GITHUB_REPOSITORY, SCRIPT_OUTPUT } = process.env;
             const [repoOwner, repoName] = GITHUB_REPOSITORY.split('/');
             const prNumber = context.issue.number;
 
@@ -130,7 +134,7 @@ jobs:
                 owner: repoOwner,
                 repo: repoName,
                 comment_id: comment.id,
-                body: `## 🚀 Translation Verification Summary\n\n\n${ERROR_OUTPUT}\n`
+                body: `## 🚀 Translation Verification Summary\n\n\n${SCRIPT_OUTPUT}\n`
               });
               console.log("Updated existing comment.");
             } else if (!comment) {
@@ -139,13 +143,19 @@ jobs:
                 owner: repoOwner,
                 repo: repoName,
                 issue_number: prNumber,
-                body: `## 🚀 Translation Verification Summary\n\n\n${ERROR_OUTPUT}\n`
+                body: `## 🚀 Translation Verification Summary\n\n\n${SCRIPT_OUTPUT}\n`
               });
               console.log("Created new comment.");
             } else {
               console.log("Comment update attempt denied. Actor does not match.");
             }
 
+      - name: Fail job if errors found
+        if: env.FAIL_JOB == 'true'
+        run: |
+          echo "Failing the job because errors were detected."
+          exit 1
+
   update-translations-main:
     if: github.event_name == 'push'
     permissions: