What are the potential pitfalls of using iframes to load external content in PHP?

Using iframes to load external content in PHP can pose security risks such as clickjacking, where malicious websites can overlay the iframe with deceptive content. To mitigate this risk, it is recommended to use the X-Frame-Options header to control how your website can be embedded in iframes on other sites. By setting this header to 'SAMEORIGIN' or 'DENY', you can prevent clickjacking attacks. 

<?php
header("X-Frame-Options: SAMEORIGIN");
?>

Keywords

iframes external content security risks cross-site scripting PHP vulnerabilities

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