Are there any security concerns to consider when using iframes to display external content in a website?

When using iframes to display external content in a website, there are security concerns to consider such as the possibility of cross-site scripting attacks or clickjacking. To mitigate these risks, it is important to ensure that the external content being displayed is from a trusted source and to implement proper security measures such as setting the sandbox attribute on the iframe element. 

<iframe src="https://example.com" sandbox="allow-same-origin allow-scripts"></iframe>

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iframes security concerns external content website PHP

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