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Cybersecurity Attacks and Defenses in a Cloudy World

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Is Your Website Hosted In An S3 Bucket Misconfigured?

6 min readJun 13, 2025

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⚙️ A series on Security Automation. The Code.

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In the last few posts I wrote some code to deploy a public static website in an S3 bucket. The configuration includes CloudFront and a TLS Certificate.

The related posts for how I developed the website are all listed in this blog post on AI research and programming with AI:

In this post I’m going to explain a common security misconfiguration that people make when implementing websites in S3 buckets. I used to have a lab covering this topic when I taught cloud security classes that basically showed people how to implement the code I wrote in that series to prevent this misconfiguration.

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Cloud Security
Cloud Security

Published in Cloud Security

Cybersecurity Attacks and Defenses in a Cloudy World

Teri Radichel
Teri Radichel

Written by Teri Radichel

CEO 2nd Sight Lab | Pentesting | Research | AWS Security Hero | Masters of Infosec & Masters Software Engineering | GSE | IANS | SANS Difference Makers Award