About SANS Cybersecurity Instructors

Matt Edmondson, Senior SANS Instructor, STI faculty, and Founder of Argelius Labs, authored SEC497 and SEC587. A DHS veteran with 11 GIAC certifications and OSCP, he draws on 20 years of investigations to deliver accessible, real-world OSINT training.

Ryan’s extensive experience, including roles as a cybersecurity engineer for major Department of Defense cloud projects and as a lead auditor, underscores his dedication to enhancing the security posture of critical systems.

Steve has transformed global cybersecurity by leading complex digital crime investigations for the FBI and DoD, and by training national cyber units in over 60 countries. His work has set the global standard for incident response and threat hunting.

Brian Ventura, a Partner at Cyverity, an information security consulting firm specializing in governance, focuses on enterprise information security governance, risk, and compliance.

Stephen Sims, an esteemed vulnerability researcher and exploit developer, has significantly advanced cybersecurity by authoring SANS's most advanced courses and co-authoring the "Gray Hat Hacking" series.

A visionary OT security leader, SANS Principal Instructor, and USMC veteran, Don co-authored ICS613 and teaches ICS410. He translates years of frontline experience into safer, practical methods to empower defenders protecting critical infrastructure.