$id = $_GET['id']; $query = "SELECT * FROM products WHERE id = $id"; An attacker can modify the URL from: index.php?id=5 to index.php?id=5 UNION SELECT username, password FROM admins
Introduction In the vast ocean of the World Wide Web, search engines like Google, Bing, and Shodan are our lighthouses. They use web crawlers to index trillions of pages, making information accessible within milliseconds. However, beneath the surface of standard search results lies a hidden layer of technical data, accessible through specialized commands known as Google Dorks . inurl indexphpid upd
if (!ctype_digit($_GET['id'])) { die("Invalid request."); } If upd is an internal action (e.g., updating a cart), use POST requests instead of GET. URLs with ?id=upd should never exist; use session variables or hidden form fields. 5. Use robots.txt and NoIndex While not a security measure, you can ask search engines not to index sensitive parameters: $id = $_GET['id']; $query = "SELECT * FROM
$id = $_GET['id']; $stmt = $conn->prepare("SELECT * FROM products WHERE id = ?"); $stmt->bind_param("i", $id); Do not use predictable parameter names like id , upd , cat , or view . Use hashed or random names: index.php?x7f9q=123 This makes dorking useless because attackers cannot guess the parameter. 3. Reject Suspicious Input Implement a whitelist for the id parameter: Use robots
$id = $_GET['id']; $stmt = "SELECT * FROM products WHERE id = $id";