What are the potential pitfalls of incorrectly implementing BCC addresses in a PHP mailer-script?

Incorrectly implementing BCC addresses in a PHP mailer-script can lead to privacy breaches as all recipients will be able to see each other's email addresses. To prevent this, make sure to properly set the headers in the mail function to include the BCC addresses without exposing them to other recipients. 

$to = 'recipient@example.com';
$subject = 'Subject';
$message = 'Message';
$bcc = 'bcc@example.com';

$headers = 'From: sender@example.com' . "\r\n";
$headers .= 'Bcc: ' . $bcc . "\r\n";

mail($to, $subject, $message, $headers);

Keywords

PHP mailer-script BCC addresses security vulnerability email spoofing

Related Questions