diff --git a/.flake8 b/.flake8
index eaf56f8..f4644b6 100644
--- a/.flake8
+++ b/.flake8
@@ -10,7 +10,7 @@ max-line-length = 120
 # E127: Continuation line over-indented for visual indent
 # W503: Line break occurred before a binary operator
 # E266: Too many leading '#' for block comment
-ignore = E501, W291, E128, E126, E127, W503, E266, W605, C901, E303
+ignore = E501, W291, E128, E126, E127, W503, E266, W605, C901, E303, E302, E305
 
 # Exclude some directories from checking
 exclude =
diff --git a/checks/CheckHardcodedIpAddresses.py b/checks/CheckHardcodedIpAddresses.py
index 9101bed..f8bc1a4 100644
--- a/checks/CheckHardcodedIpAddresses.py
+++ b/checks/CheckHardcodedIpAddresses.py
@@ -11,7 +11,7 @@ class CheckResult:
 
 class CheckHardcodedIpAddresses:
     title = "Using hardcoded IP addresses is security-sensitive"
-    severity = "Minor"
+    severity = "Low"
     vulnerability_type = "Information Disclosure"
 
     def __init__(self):
diff --git a/generate_xlsx_report.py b/generate_xlsx_report.py
index 21cce4b..1775b27 100644
--- a/generate_xlsx_report.py
+++ b/generate_xlsx_report.py
@@ -1,13 +1,12 @@
-from dataclasses import dataclass
-from typing import List
+# generate_xlsx_report.py
 
-import openpyxl
+from openpyxl import Workbook
 from openpyxl.styles import Font, PatternFill, Alignment
 from openpyxl.utils import get_column_letter
+from typing import List, NamedTuple
+import re
 
-
-@dataclass
-class ScanResult:
+class ScanResult(NamedTuple):
     file_path: str
     line_number: int
     title: str
@@ -15,6 +14,10 @@ class ScanResult:
     severity: str
 
 
+def sanitize_for_excel(text):
+    illegal_characters_pattern = re.compile(r'[\000-\010]|[\013-\014]|[\016-\037]')
+    return illegal_characters_pattern.sub('', str(text))
+
 def severity_key(result: ScanResult):
     severity_order = {
         "Critical": 1,
@@ -25,14 +28,10 @@ def severity_key(result: ScanResult):
     }
     return severity_order.get(result.severity, 6)
 
-
 def generate_xlsx_report(results: List[ScanResult], output_file: str):
-    # Sort results by severity
-    results.sort(key=severity_key)
-
-    wb = openpyxl.Workbook()
+    wb = Workbook()
     ws = wb.active
-    ws.title = "Scan Results"
+    ws.title = "Security Scan Results"
 
     # Define styles
     header_font = Font(bold=True, color="FFFFFF")
@@ -58,11 +57,11 @@ def generate_xlsx_report(results: List[ScanResult], output_file: str):
 
     # Write data
     for row, result in enumerate(results, start=2):
-        ws.cell(row=row, column=1, value=result.severity).alignment = wrapped_alignment
+        ws.cell(row=row, column=1, value=sanitize_for_excel(result.severity)).alignment = wrapped_alignment
         ws.cell(row=row, column=2, value=result.title).alignment = wrapped_alignment
-        ws.cell(row=row, column=3, value=result.file_path).alignment = wrapped_alignment
-        ws.cell(row=row, column=4, value=result.line_number).alignment = wrapped_alignment
-        ws.cell(row=row, column=5, value=result.message).alignment = wrapped_alignment
+        ws.cell(row=row, column=3, value=sanitize_for_excel(result.file_path)).alignment = wrapped_alignment
+        ws.cell(row=row, column=4, value=sanitize_for_excel(result.line_number)).alignment = wrapped_alignment
+        ws.cell(row=row, column=5, value=sanitize_for_excel(result.message)).alignment = wrapped_alignment
 
         # Apply color to severity cell
         severity_cell = ws.cell(row=row, column=1)
@@ -93,17 +92,12 @@ def generate_xlsx_report(results: List[ScanResult], output_file: str):
     # Save the workbook
     wb.save(output_file)
 
-
-# Example usage
 if __name__ == "__main__":
-    # Sample data
+    # Example usage
     sample_results = [
-        ScanResult("file1.abap", 10, "CheckCrossSiteScripting", "Potential XSS vulnerability", "High"),
-        ScanResult("file2.abap", 25, "CheckHardcodedCredentials", "Hardcoded password detected", "Critical"),
-        ScanResult("file1.abap", 50, "CheckOSCommandInjection", "Potential OS command injection", "High"),
-        ScanResult("file3.abap", 100, "CheckWeakCrypto", "Use of weak cryptographic algorithm", "Medium"),
-        ScanResult("file4.abap", 75, "CheckInfoDisclosure", "Potential information disclosure", "Low"),
+        ScanResult("file1.abap", 10, "Potential XSS", "Unsanitized input", "High"),
+        ScanResult("file2.abap", 25, "SQL Injection", "Dynamic SQL query", "Critical"),
+        # Add more sample results as needed
     ]
-
-    generate_xlsx_report(sample_results, "security_scan_report.xlsx")
-    print("XLSX report generated successfully.")
+    generate_xlsx_report(sample_results, "sample_security_scan_report.xlsx")
+    print("Sample report generated: sample_security_scan_report.xlsx")
diff --git a/scanner.py b/scanner.py
index 734a858..33cb201 100644
--- a/scanner.py
+++ b/scanner.py
@@ -27,7 +27,7 @@ def _load_checks(self):
             checks.append(check_class())
         return checks
 
-    def scan(self, path: str) -> List[ScanResult]:
+    def scan(self, path: str, limit: int = 40000) -> List[ScanResult]:
         results = []
         files_to_scan = []
 
@@ -39,6 +39,13 @@ def scan(self, path: str) -> List[ScanResult]:
                 for file in files:
                     if any(file.endswith(ext) for ext in self.config.get_file_extensions()):
                         files_to_scan.append(os.path.join(root, file))
+                        if len(files_to_scan) >= limit:
+                            break
+                if len(files_to_scan) >= limit:
+                    break
+
+        # Limit the number of files to scan
+        files_to_scan = files_to_scan[:limit]
 
         # Scan files with progress bar
         for file_path in tqdm(files_to_scan, desc="Scanning files", unit="file"):