diff --git a/main.py b/main.py
index 47d4d7c..f4c7ac7 100644
--- a/main.py
+++ b/main.py
@@ -11,12 +11,13 @@ def main():
     parser = argparse.ArgumentParser(description="ABAP Code Scanner")
     parser.add_argument("path", help="Path to the ABAP code directory or file")
     parser.add_argument("-c", "--config", help="Path to configuration file", default="config.yml")
+    parser.add_argument("-t", "--threads", type=int, help="Number of threads to use for scanning", default=48)
     args = parser.parse_args()
 
     config = Config(args.config)
     scanner = Scanner(config)
 
-    results = scanner.scan(args.path)
+    results = scanner.scan(args.path, num_threads=args.threads)
 
     # Convert scanner results to ScanResult objects, now including severity
     report_results = [
@@ -25,16 +26,15 @@ def main():
             line_number=result.line_number,
             title=result.title,
             message=result.message,
-            severity=result.severity  # Make sure your scanner provides this information
+            severity=result.severity
         ) for result in results
     ]
 
     # Generate the XLSX report
     generate_xlsx_report(report_results, "abap_security_scan_report.xlsx")
 
-    print("Scan complete. XLSX report generated: abap_security_scan_report.xlsx")
-
+    print(f"Scan complete. XLSX report generated: abap_security_scan_report.xlsx")
 
 
 if __name__ == "__main__":
-    main()
+    main()
\ No newline at end of file
diff --git a/scanner.py b/scanner.py
index 33cb201..9e3a2eb 100644
--- a/scanner.py
+++ b/scanner.py
@@ -4,6 +4,8 @@
 import os
 from typing import List, NamedTuple
 from tqdm import tqdm
+import concurrent.futures
+import chardet
 
 
 class ScanResult(NamedTuple):
@@ -27,8 +29,7 @@ def _load_checks(self):
             checks.append(check_class())
         return checks
 
-    def scan(self, path: str, limit: int = 40000) -> List[ScanResult]:
-        results = []
+    def scan(self, path: str, limit: int = 1000000000, num_threads: int = 48) -> List[ScanResult]:
         files_to_scan = []
 
         # Collect all files to scan
@@ -47,24 +48,42 @@ def scan(self, path: str, limit: int = 40000) -> List[ScanResult]:
         # 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"):
-            results.extend(self._scan_file(file_path))
+        # Scan files in parallel with progress bar
+        with concurrent.futures.ThreadPoolExecutor(max_workers=num_threads) as executor:
+            futures = [executor.submit(self._scan_file, file_path) for file_path in files_to_scan]
+            results = []
+            for future in tqdm(concurrent.futures.as_completed(futures), total=len(files_to_scan), desc="Scanning files", unit=" file"):
+                results.extend(future.result())
 
         return results
 
     def _scan_file(self, file_path: str) -> List[ScanResult]:
         results = []
-        with open(file_path, 'r') as f:
-            content = f.read()
-        for check in self.checks:
-            check_results = check.run(content)
-            for result in check_results:
-                results.append(ScanResult(
-                    file_path=file_path,
-                    line_number=result.line_number,
-                    title=check.title,
-                    message=result.line_content,
-                    severity=check.severity
-                ))
-        return results
+        try:
+            # First, try to detect the file encoding
+            with open(file_path, 'rb') as f:
+                raw_data = f.read()
+            detected_encoding = chardet.detect(raw_data)['encoding']
+
+            # Try to read the file with the detected encoding
+            try:
+                with open(file_path, 'r', encoding=detected_encoding) as f:
+                    content = f.read()
+            except UnicodeDecodeError:
+                # If that fails, try with 'latin-1' encoding, which should read all byte values
+                with open(file_path, 'r', encoding='latin-1') as f:
+                    content = f.read()
+
+            for check in self.checks:
+                check_results = check.run(content)
+                for result in check_results:
+                    results.append(ScanResult(
+                        file_path=file_path,
+                        line_number=result.line_number,
+                        title=check.title,
+                        message=result.line_content,
+                        severity=check.severity
+                    ))
+        except Exception as e:
+            print(f"Error scanning file {file_path}: {str(e)}")
+        return results
\ No newline at end of file