An attacker might manually change id=1 to id=2 to see products or private user data they aren't supposed to access.
) that fetches data from a database based on the ID provided in the URL. For example, product.php?id=1 tells the server to run a query like SELECT * FROM products WHERE id = 1 Session Management : Shopping carts typically store IDs in a PHP php id 1 shopping
Instead of exposing order_id=42 , expose a random token: An attacker might manually change id=1 to id=2