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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 TrustedSec HQ | October 28 2025

ISC2 Cleveland Chapter Member Meeting - October 2025

ISC2 Cleveland Chapter October MeetupCome join us for our meetup! The ISC2 Cleveland Chapter is hosting an exciting in-person event for all cybersecurity…

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Events Lake Buena Vista, FL | October 27 2025

InfoSecWorld 2025

TrustedSec is proud to sponsor and hold a workshop at this year's InfoSec World in Lake Buena Vista, Florida. Make sure to visit our booth if you'll be there!

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Training Resources October 25 2025

InfoSec World Workshop - Adversary Tactics and Threat Hunting

This immersive workshop will train you to simulate attacks, hunt threats, and build detections using manual, automated, and AI-driven methods across network…

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Events Provo, Utah | October 21 2025

SAINTCON 2025

We are proud to sponsor and have a booth at this year's SAINTCON!

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Webinars October 15 2025

Incident Response: Lessons From the Front Lines

IR Practice Lead Carlos Perez will draw from recent, anonymized investigations to expose the most devastating failure patterns our Incident Response team has…

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Blog October 10 2025

Skimming Credentials with Azure's Front Door WAF

A Web Application Firewall (WAF) is a powerful thing. It inspects all traffic that traverses it, seeing everything that is submitted to a page. EVERYTHING.…

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Events Deadwood, South Dakota | October 08 2025

Wild West Hackin' Fest 2025

We are excited to return to Wild West Hackin' Fest this year!

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Blog October 07 2025

PCI P2PE vs. E2EE – Scoping it Out

If your payment processor says they use “End-to-End Encryption” your PCI DSS compliance scope may be bigger than you expect. In this blog, we break down how…

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