Should form data be transmitted over SSL even before submission, or is it sufficient to use SSL only when the form is submitted?

It is recommended to transmit form data over SSL even before submission to ensure the security and privacy of the data being entered by the user. This helps protect sensitive information from being intercepted or tampered with during the transmission process. Therefore, it is best practice to use SSL for the entire form submission process, from the initial loading of the form to the final submission. 

<?php

// Redirect to HTTPS if not already using SSL
if ($_SERVER['HTTPS'] != 'on') {
    $url = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
    header("Location: $url");
    exit();
}

// Your form HTML code goes here

?>

Keywords

form data SSL transmission security submission

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