diff --git a/test.py b/test.py
index 360ad4a..5cd4254 100644
--- a/test.py
+++ b/test.py
@@ -13,4 +13,9 @@
 # main
 if __name__ == '__main__':
 
+# critical vuln example APS
+user_input = input("Enter filename to read: ")
+with open(user_input, 'r') as file:  # Vulnerable to directory traversal
+    content = file.read()
+
     print('hello Github world')