What are some common methods used by hackers/crackers to intercept data sent over the internet, especially through forms?

To prevent hackers/crackers from intercepting data sent over the internet, especially through forms, it is essential to encrypt the data using HTTPS protocol. This ensures that the data is transmitted securely between the client and the server, making it difficult for hackers to intercept and access sensitive information.

// Enable HTTPS encryption for secure data transmission
if ($_SERVER['HTTPS'] !== 'on') {
    $url = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header('Location: ' . $url);
    exit();
}