John Cartrett - Principal at Undisclosed

John Cartrett

Principal at Undisclosed

Greater Houston United States

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Summary

👤

Senior

🎓

Top School

John Cartrett is a Principal-level offensive security leader with 11 years of hands-on experience building and running red, purple, and advanced penetration testing practices across enterprise and consulting environments. He has scaled teams and programs from startup offerings to multi-million-dollar practices, led large Red Team operations, and served as a global SME while managing people, margins, and client-facing risk discussions. Deeply technical and curious, he contributes to Metasploit—improving scanners and error handling—and is known for post-exploitation creativity and data exfiltration tradecraft. Based in Greater Houston, he pairs strategic program leadership with daily red-team ops and mentorship, routinely translating complex adversary tactics into actionable detection and remediation guidance.

11 years of coding experience

8 years of employment as a software developer

70-742: Identity with Windows Server 2016, 70-742: Identity with Windows Server 2016 at Microsoft

Dark Side Ops: Custom Penetration Testing, Dark Side Ops: Custom Penetration Testing at Silent Break Security

SEC642: Advanced Web App Penetration Testing and Ethical Hacking, SEC642: Advanced Web App Penetration Testing and Ethical Hacking at GIAC

Adversary Tactics: Red Team Ops, Adversary Tactics: Red Team Ops at SpectorOps

Github Skills (8)

metasploit10

meta-framework10

penetration-testing10

scanning10

vulnerability-scanners10

meta10

ruby10

fest7

Programming languages (5)

C#PowerShellShellRubyPython

Github contributions (5)

rapid7/metasploit-framework

Nov 2016 - Mar 2019

Metasploit Framework

Role in this project:

Security Engineer

Contributions:11 commits, 6 PRs, 20 comments in 2 years 3 months

Contributions summary:John primarily focused on modifying existing Metasploit modules, likely to improve their functionality or address identified issues. The commits demonstrate the user's ability to identify and fix bugs, and refactor code within several auxiliary scanner modules. Contributions included modifications to output formatting and improving error handling across different modules, including HTTP and SMB scanners.

metasploitmetasploit-framework

jnqpblc/SharpReg

Jul 2019 - Apr 2020

Contributions:17 commits, 20 pushes, 1 branch in 9 months

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