Tim Medin
Chief Executive Officer at IANS
Texas, United States
Summary
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RockstarTim Medin is a seasoned information security leader and CEO of Red Siege with over a decade of hands-on experience in red teaming, penetration testing, application assessments, and vulnerability management. A retired Senior SANS Instructor and current IANS faculty member, he blends deep technical teaching experience with operational offensive services. Tim’s contributions to Kerberos tooling—enhancing kerberoast scripts and crafting SPN extraction utilities—reflect a practical mastery of authentication attacks often used in real-world engagements. Based in Texas, he also serves on multiple advisory boards and the Cybersecurity Risk Foundation, bringing strategic governance experience to complement his technical pedigree. Unusually for an executive, he remains actively involved in tool development and classroom instruction, keeping his offensive skills sharp while leading at the business level.
12 years of coding experience
8 years of employment as a software developer
Github Skills (7)
security-testing10
cracking10
python10
kerberos10
vbscript9
powershell9
hashcat8
Programming languages (11)
Github contributions (5)
nidem/kerberoast
Sep 2014 - Dec 2022
Role in this project:
Security Engineer
Security EngineerContributions:3 reviews, 26 commits, 9 PRs in 8 years 4 months
Contributions summary:Tim's primary contribution focuses on enhancing the `kerberoast` repository, a tool for Kerberos-related security testing. They implemented and modified scripts to extract and format Kerberos tickets for password cracking, primarily through the addition and modification of the `kirbi2john.py` script, and developed scripts to find and extract SPNs using PowerShell and VBScript, which are associated with user accounts. Their work involved adapting existing scripts and creating new ones, demonstrating a strong understanding of Kerberos authentication and related security concepts.
nidem/public-pentesting-reports
Jul 2018 - Jan 2024
Curated list of public penetration test reports released by several consulting firms and academic security groups
Contributions:2 PRs, 8 pushes in 5 years 7 months
groupsreportspenetration-testsecurity-groupssecurity
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