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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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Events December 04 2025

Research on Windows Accessibility: Narrator.exe

Join us for our next Discord Livestream "Research on Windows Accessibility: Narrator.exe" on December 4 at 11:00AM ET! During this exclusive session, Principal…

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Webinars December 03 2025

NIST CSF 2.0 - From Compliance to Confidence

During our next webinar, our experts will cover the latest evolution of the National Institute of Standards and Technology Cybersecurity Framework (NIST CSF),…

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Events November 20 2025

Discord Livestream: Hunting Deserialization Vulnerabilities With Claude

Join us for an exclusive live Discord presentation and Q&A with Senior Security Consultant James Williams.

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Events TrustedSec HQ | November 19 2025

Women in CyberSecurity (WiCyS) NEO - Secure Your Data in the Age of AI

Join WiCyS NEO as they wrap up the year with a grand finale event at the TrustedSec HQ!

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News November 19 2025

WWL First News with Tommy Tucker - Websites and apps are tracking your data. Here's what you need to know

Ever wonder what happens to your data when you use a website, app, or make a purchase? Advisory Solutions Director Alex Hamerstone joins WWL First News to…

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Podcasts November 19 2025

Security Noise - C2 for Me + You

Attackers and threat actors use command and control techniques, also known as C2, to gain access to networks and communicate with compromised devices. Listen…

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Blog November 18 2025

Managing Privileged Roles in Microsoft Entra ID: A Pragmatic Approach

Introducing a custom model for understanding privileged roles in Microsoft Entra ID, developed by TrustedSecWhenever our team conducts a Hardening Review of…

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Blog November 13 2025

Helpful Hints for Writing (and Editing) Cybersecurity Reports

When it comes to reading (and editing) (and proofreading) technical documents, it's important to remember that the details are key, and can make all the…

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