214 - What are polyglot files and how bad are they?

YusufOnSecurity.com

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In this episode, we’ll be exploring a particularly intriguing file types: polyglot files. These digital shapeshifters have become a powerful tool in the arsenal of cyber attackers, capable of bypassing security measures, confusing systems, and delivering malicious payloads in ways that are both creative and devastating.
Over the next 20 to 30 minutes or so, we’ll break down what polyglot files are, how they work, and why they’re so dangerous. We’ll also examine some real-world examples where polyglot files were used in cyberattacks. We will reference the MITRE ATT&CK framework to understand how these techniques fit into the broader landscape of adversarial tactics. Finally, we’ll discuss mitigation strategies and close with a cybersecurity myth that needs busting
Before we dive into the main topic, lets glance what is happening on the security front:

• UEFI Secure Boot bypass vulnerability

- https://en.wikipedia.org: Polyglot

- https://attack.mitre.org: Masquerading

- https://arxiv.org: Where the Polyglots Are: How Polyglot Files Enable Cyber Attack Chains and Methods for Detection & Disarmament

- https://medium.com: Polyglot Files A Hackers Best Friend

- https://www.bleepingcomputer.com: New polyglot malware hits aviation, satellite communication firms

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