Sean Deaton – Medium

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Sean Deaton

Kernel Level Protections: Supervisor Mode Execution Protection (SMEP) — Part I

SMEP prevents code running in the context of the kernel from executing any code in userland memory.

5 min readMay 22, 2023

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Kernel Level Protections: Supervisor Mode Execution Protection (SMEP) — Part I

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Sean Deaton

Installing Custom Fonts in Ghost Themes

2 min readJun 4, 2023

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Installing Custom Fonts in Ghost Themes

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Sean Deaton

On Imbalanced Datasets

I recently came across some interesting results using scikit-learn’s classification_report.

5 min readMay 15, 2023

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On Imbalanced Datasets

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Sean Deaton

Don’t Delete grub2

Don’t uninstall grub2 without ensuring a newer version will be installed.

2 min readMar 23, 2023

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Don’t Delete grub2

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Sean Deaton

Hardware-Assisted AddressSanitization on ARM64

Reducing ASAN memory usage by utilizing Top-Byte Ignore (TBI) on ARM64 hardware. Also, some 24-bit Apple Macintosh history.

6 min readFeb 18, 2023

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Hardware-Assisted AddressSanitization on ARM64

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Sean Deaton

ASAN

6 min readFeb 10, 2023

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ASAN

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Sean Deaton

How Learning Ruby Helped Me Understand Swift

Until recently, I had no idea how to use closures in Swift. Until I learned Ruby.

4 min readJan 27, 2023

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How Learning Ruby Helped Me Understand Swift

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Sean Deaton

The Problem with Open Source Software Security

Reporting vulnerabilities in open-source software is a nightmare. How can we make it better?

4 min readJan 22, 2023

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The Problem with Open Source Software Security

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Sean Deaton

💎 The Ruby Association Certified Ruby Programmer Silver Exam

A few resources to help you pass the exam!

4 min readJan 15, 2023

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Pomegranate arils with a gorgeous ruby red color.

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Sean Deaton

Finding CVE-2022–3786 (openssl) with Mayhem

What is the bug?

11 min readJan 15, 2023

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A poor meme depicting Fry, from Futurama, unsure if he found a bug in the program or a bug in the harness.

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Sean Deaton

Sean Deaton

Hey I'm Sean! I enjoy fuzzing and all things security. I love to teach and mentor others. I'm also trying to improve my technical writing. Critiques welcome!

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