We recently helped a customer identify some potential CloudFront/S3 takeover risks. You can find the details of the risk described in the article, "Simple Route53/Cloudfront/s3 subdomain takeover".
Here are the 3 relevant questions/queries added to the library. You may want to try these questions/queries in your environment and set up alerts accordingly.
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The questions are already added in-app. Simply type "cloudfront origin" in the search bar to run them.
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You can then create an alert for each one. We are adding them to the alert rule packs, too.
To be clear, when you run the questions/queries highlighted, the best result is no results.
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