What are the potential security risks of using iframes in PHP websites?

Using iframes in PHP websites can pose security risks such as clickjacking, where an attacker can overlay malicious content on top of the iframe to trick users into clicking on it. To prevent this, you can add a X-Frame-Options header to your PHP code to control how your site can be embedded in iframes. 

header("X-Frame-Options: DENY");

Keywords

iframes security risks PHP websites cross-site scripting content security policy

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