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Joe Sullivan

Senior Security Consultant

EXPERIENCE
Joe has over 20 years of experience in Information Security. He has worked in Incident Response, forensics, penetration testing, and security leadership as a CISO for a financial institution.

EDUCATION & CERTIFICATIONS

  • GIAC Penetration Tester (GPEN)
  • GIAC Strategic Planning, Policy, and Leadership (GSTRT)
  • GIAC Certified Forensic Examiner (GCFE)
  • GIAC Certified Incident Handler (GCIH)
  • GIAC Security Leadership (GSLC)
  • GIAC Cloud Penetration Tester (GCPN)
  • GIAC Public Cloud Security (GPCS)
  • GIAC Certified Web Application Penetration Tester (GWAPT)
  • Certified Information Systems Security Professional (CISSP)
  • CNSSI 4012 Senior Systems Manager
  • CNSSI 4013 System Administrator in Information Systems Security
  • CNSSI 4014 Information Systems Security Officer
  • NSTISSI 4011 Information Systems Security Professional
  • NSTISSI 4015 Systems Certifier

PROFESSIONAL AFFILIATIONS

  • GIAC Advisory Board, ISC2 

Joe also teaches leadership courses for the SANS Institute.

INDUSTRY CONTRIBUTIONS
Joe has presented at security conferences including Check Point CPX, Information Warfare Summit, and BSides.

PASSION FOR SECURITY
Joe’s passion for security started in Incident Response and forensics in the late ‘90s. Since then, he has developed a passion for offensive security, security leadership, and teaching others.

Featured Blogs And Resources

Discover the blogs, analysis, webinars, and podcasts by this team member.

Blog September 21 2023

Basic Authentication Versus CSRF

I was recently involved in an engagement where access was controlled by Basic Authentication. One (1) of the findings I discovered was a Cross-Site Request…

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Blog June 27 2023

Introducing CoWitness: Enhancing Web Application Testing With External Service Interaction

CoWitness improves web application testing by capturing complete DNS and HTTP responses, revealing false positives and hidden vulnerabilities, and helping…

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Blog April 16 2026

Dungeons and Daemons

Play Roll for Initiative. Hack the Planet.Dungeons & Daemons is a cybersecurity RPG that drops you into the boots of a Red Team operator on a live…

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Webinars April 15 2026

You Had Us at the First Alert: A Guide to Finding Frequently Missed Detections

Join us for this webinar to get a clearer picture of where your detection coverage has blind spots and a practical roadmap for closing them before a real…

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Blog April 14 2026

Benchmarking Self-Hosted LLMs for Offensive Security

We put LLMs to the test—let's find out how good AI is at hacking! We walk through six simple challenges with intentionally naïve setups to test how capable…

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Events April 09 2026

TrustedSec Livestream - AMA: Detection Engineering in 2026 and Beyond with John Dwyer

Come prepared with your questions and walk away with actionable knowledge to sharpen your detection capabilities.

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Blog April 09 2026

IAM the Captain Now – Hijacking Azure Identity Access

I decided to spend some research time diving in depth into Identity and Access Management (IAM) within Microsoft Azure. I am going to show you within this blog…

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Blog April 07 2026

Building a Detection Foundation: Part 5 - Correlation in Practice

From Data Sources to DetectionWe've covered a lot of ground in this series: Windows Security events for logon tracking and process execution; PowerShell…

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Podcasts April 06 2026

Security Noise - A Goblin, a Ghost, and a Ninja Walk into the Azure Bar

On this episode, Geoff and Skyler are joined by NyxGeek to discuss his suite of Azure bypass techniques. Since these techniques leave no trace, what does it…

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Blog April 02 2026

Reduce Repetition and Free up Time With Mobile File Extractor

If you do the same thing three times, automate it. Introducing Mobile Data Extractor, a Python tool that handles the repetitive work of mobile app data…

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