The latest release of the Google Publisher Tag library addressed a vulnerability that posed a potential security risk for earlier versions.
We strongly recommend agains serving cached versions of
What should I do?
To do so, your pages should refer to the GPT library hosted by Ad Manager at
<script async="async" src="https://securepubads.g.doubleclick.net/tag/js/gpt.js">
This will enable Google to better safeguard your site(s) from security risks.